Quizbank/University Physics Semester 2/T8

University Physics Semester 2/T8 ID153341821922

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Exams:  A0  A1  A2   B0  B1  B2   C0  C1  C2   D0  D1  D2   E0  E1  E2   F0  F1  F2   G0  G1  G2   H0  H1  H2   I0  I1  I2   J0  J1  J2   K0  K1  K2   L0  L1  L2   M0  M1  M2   N0  N1  N2   O0  O1  O2   P0  P1  P2   Q0  Q1  Q2   R0  R1  R2   S0  S1  S2   T0  T1  T2   U0  U1  U2   V0  V1  V2   W0  W1  W2   X0  X1  X2   Y0  Y1  Y2   Z0  Z1  Z2

Answers:  A0  A1  A2   B0  B1  B2   C0  C1  C2   D0  D1  D2   E0  E1  E2   F0  F1  F2   G0  G1  G2   H0  H1  H2   I0  I1  I2   J0  J1  J2   K0  K1  K2   L0  L1  L2   M0  M1  M2   N0  N1  N2   O0  O1  O2   P0  P1  P2   Q0  Q1  Q2   R0  R1  R2   S0  S1  S2   T0  T1  T2   U0  U1  U2   V0  V1  V2   W0  W1  W2   X0  X1  X2   Y0  Y1  Y2   Z0  Z1  Z2

78 Tests = 3 versions x 26 variations: Each of the 26 variations (A, B, ...) represents a different random selection of questions taken from the |study guide.The 3 versions (0,1,..) all have the same questions but in different order and with different numerical inputs. Unless all students take  version "0" it is best to reserve it for the instructor because the questions are grouped according to the order in which they appear on the study guide.

Links:  Quizbank/Instructions   |Study guide    file:QB-University Physics Semester 2-T8.pdf

Contact me at User talk:Guy vandegrift if you need any help.

T8 A0
1) When light passes from glass to air
 * a) it bends towards the normal
 * b) it bends away from the normal
 * c) the frequency increases
 * d) the frequency decreases
 * e) it does not bend

2) The law of reflection applies to
 * a) curved surfaces
 * b) only light in a vacuum
 * c) both flat and curved surfaces
 * d) flat surfaces
 * e) telescopes but not microscopes

3) In optics, normal means
 * a) parallel to the surface
 * b) to the left of the optical axis
 * c) perpendicular to the surface
 * d) to the right of the optical axis

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

5) When light passes from air to glass
 * a) it does not bend
 * b) the frequency increases
 * c) the frequency decreases
 * d) it bends away from the normal
 * e) it bends towards the normal

6) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

7) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

9) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

T8 A1
1) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency decreases
 * c) the frequency increases
 * d) it bends away from the normal
 * e) it does not bend

2) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

4) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

5) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

6) When light passes from air to glass
 * a) it bends towards the normal
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) the frequency increases
 * e) it does not bend

7) The law of reflection applies to
 * a) flat surfaces
 * b) only light in a vacuum
 * c) curved surfaces
 * d) both flat and curved surfaces
 * e) telescopes but not microscopes

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

9) In optics, normal means
 * a) to the right of the optical axis
 * b) to the left of the optical axis
 * c) parallel to the surface
 * d) perpendicular to the surface

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

T8 A2
1) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it does not bend
 * d) it bends away from the normal
 * e) the frequency decreases

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) When light passes from glass to air
 * a) it does not bend
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) it bends towards the normal
 * e) the frequency increases

4) The law of reflection applies to
 * a) only light in a vacuum
 * b) curved surfaces
 * c) both flat and curved surfaces
 * d) telescopes but not microscopes
 * e) flat surfaces

5) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * a) 2.49 x 100 cm
 * b) 4.42 x 100 cm
 * c) 7.86 x 100 cm
 * d) 1.4 x 101 cm
 * e) 2.49 x 101 cm

7) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

8) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) to the left of the optical axis
 * d) perpendicular to the surface

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 B0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) only light in a vacuum
 * d) telescopes but not microscopes
 * e) flat surfaces

3) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) perpendicular to the surface
 * d) to the right of the optical axis

4) When light passes from glass to air
 * a) it does not bend
 * b) the frequency decreases
 * c) it bends away from the normal
 * d) it bends towards the normal
 * e) the frequency increases

5) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) total internal reflection
 * c) partial internal absorption
 * d) total external refraction
 * e) the Doppler shift

6) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

7) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) very far away
 * d) at infinity
 * e) directly in front of the eye (almost touching)

T8 B1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

3) When light passes from glass to air
 * a) it bends away from the normal
 * b) the frequency decreases
 * c) it does not bend
 * d) the frequency increases
 * e) it bends towards the normal

4) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) to the left of the optical axis
 * d) perpendicular to the surface

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

6) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * a) 1.03 x 101 cm
 * b) 1.84 x 101 cm
 * c) 3.27 x 101 cm
 * d) 5.81 x 101 cm
 * e) 1.03 x 102 cm

7) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) very far away
 * c) directly in front of the eye (almost touching)
 * d) at infinity
 * e) Two (of the other answers) are true

8) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) total internal reflection
 * c) the invariance of the speed of light
 * d) partial internal absorption
 * e) the Doppler shift

9) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) flat surfaces
 * c) telescopes but not microscopes
 * d) curved surfaces
 * e) only light in a vacuum

10) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

T8 B2
1) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) partial internal absorption
 * c) total external refraction
 * d) the Doppler shift
 * e) the invariance of the speed of light

2) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) In optics, normal means
 * a) to the right of the optical axis
 * b) to the left of the optical axis
 * c) perpendicular to the surface
 * d) parallel to the surface

5) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) flat surfaces
 * c) only light in a vacuum
 * d) telescopes but not microscopes
 * e) curved surfaces

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

7) When light passes from glass to air
 * a) the frequency decreases
 * b) it does not bend
 * c) the frequency increases
 * d) it bends towards the normal
 * e) it bends away from the normal

8) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) very far away
 * c) at infinity
 * d) Two (of the other answers) are true
 * e) directly in front of the eye (almost touching)

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

10) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * a) 1.03 x 101 cm
 * b) 1.84 x 101 cm
 * c) 3.27 x 101 cm
 * d) 5.81 x 101 cm
 * e) 1.03 x 102 cm

T8 C0
1) When light passes from glass to air
 * a) it does not bend
 * b) the frequency decreases
 * c) it bends towards the normal
 * d) the frequency increases
 * e) it bends away from the normal

2) The law of reflection applies to
 * a) flat surfaces
 * b) both flat and curved surfaces
 * c) only light in a vacuum
 * d) curved surfaces
 * e) telescopes but not microscopes

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

5) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) total external refraction
 * c) the Doppler shift
 * d) total internal reflection
 * e) the invariance of the speed of light

6) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

7) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

10) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) Two (of the other answers) are true
 * c) One focal length in front of the eye
 * d) very far away
 * e) at infinity

T8 C1
1) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * a) 2.49 x 100 cm
 * b) 4.42 x 100 cm
 * c) 7.86 x 100 cm
 * d) 1.4 x 101 cm
 * e) 2.49 x 101 cm

2) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) at infinity
 * d) directly in front of the eye (almost touching)
 * e) very far away

3) The law of reflection applies to
 * a) flat surfaces
 * b) curved surfaces
 * c) only light in a vacuum
 * d) both flat and curved surfaces
 * e) telescopes but not microscopes

4) When light passes from glass to air
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency increases

5) An object of height 0.67 cm is placed 106 cm behind a diverging lens with a focal length of 61 cm. What is the height of the image?


 * a) 1.18 x 10-1 cm
 * b) 1.42 x 10-1 cm
 * c) 1.7 x 10-1 cm
 * d) 2.04 x 10-1 cm
 * e) 2.45 x 10-1 cm

6) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

7) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) partial internal absorption
 * c) the Doppler shift
 * d) total external refraction
 * e) the invariance of the speed of light

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

10) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

T8 C2
1) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) only light in a vacuum
 * c) both flat and curved surfaces
 * d) curved surfaces
 * e) flat surfaces

2) When light passes from glass to air
 * a) the frequency decreases
 * b) it does not bend
 * c) the frequency increases
 * d) it bends towards the normal
 * e) it bends away from the normal

3) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

4) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

6) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the Doppler shift
 * d) the invariance of the speed of light
 * e) partial internal absorption

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

10) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) at infinity
 * d) directly in front of the eye (almost touching)
 * e) very far away

T8 D0
1) The law of reflection applies to
 * a) only light in a vacuum
 * b) telescopes but not microscopes
 * c) curved surfaces
 * d) both flat and curved surfaces
 * e) flat surfaces

2) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) rays meet whenever they pass through a lens
 * c) rays meet whenever they are forming an image
 * d) the center of the lens
 * e) rays meet if they are parallel to each other

3) When light passes from air to glass
 * a) the frequency decreases
 * b) it does not bend
 * c) it bends towards the normal
 * d) it bends away from the normal
 * e) the frequency increases

4) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) partial internal absorption
 * c) the invariance of the speed of light
 * d) the Doppler shift
 * e) total internal reflection

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) at infinity
 * c) One focal length in front of the eye
 * d) Two (of the other answers) are true
 * e) very far away

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

T8 D1
1) The law of reflection applies to
 * a) curved surfaces
 * b) both flat and curved surfaces
 * c) flat surfaces
 * d) telescopes but not microscopes
 * e) only light in a vacuum

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

3) When light passes from air to glass
 * a) it does not bend
 * b) it bends towards the normal
 * c) the frequency increases
 * d) it bends away from the normal
 * e) the frequency decreases

4) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

5) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) the center of the lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet whenever they are forming an image
 * e) rays meet if they were parallel to the optical axis before striking a lens

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

7) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) the Doppler shift
 * c) partial internal absorption
 * d) total internal reflection
 * e) total external refraction

8) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

9) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) at infinity
 * c) Two (of the other answers) are true
 * d) One focal length in front of the eye
 * e) directly in front of the eye (almost touching)

10) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

T8 D2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) the center of the lens
 * d) rays meet whenever they are forming an image
 * e) rays meet whenever they pass through a lens

3) When light passes from air to glass
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) the frequency increases
 * d) it does not bend
 * e) the frequency decreases

4) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) One focal length in front of the eye
 * c) directly in front of the eye (almost touching)
 * d) Two (of the other answers) are true
 * e) very far away

5) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

6) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) partial internal absorption
 * c) the Doppler shift
 * d) total internal reflection
 * e) the invariance of the speed of light

7) The law of reflection applies to
 * a) curved surfaces
 * b) flat surfaces
 * c) only light in a vacuum
 * d) telescopes but not microscopes
 * e) both flat and curved surfaces

8) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

T8 E0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

2) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) total internal reflection
 * c) the Doppler shift
 * d) the invariance of the speed of light
 * e) partial internal absorption

3) The law of reflection applies to
 * a) only light in a vacuum
 * b) telescopes but not microscopes
 * c) both flat and curved surfaces
 * d) curved surfaces
 * e) flat surfaces

4) When light passes from air to glass
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) the frequency decreases
 * d) it does not bend
 * e) the frequency increases

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

6) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * a) 1.26 x 10-1 cm
 * b) 1.51 x 10-1 cm
 * c) 1.81 x 10-1 cm
 * d) 2.17 x 10-1 cm
 * e) 2.61 x 10-1 cm

7) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

9) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) One focal length in front of the eye
 * e) very far away

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

T8 E1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

2) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) partial internal absorption
 * d) the Doppler shift
 * e) the invariance of the speed of light

5) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

6) The law of reflection applies to
 * a) curved surfaces
 * b) both flat and curved surfaces
 * c) only light in a vacuum
 * d) telescopes but not microscopes
 * e) flat surfaces

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

8) When light passes from air to glass
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency increases
 * e) the frequency decreases

9) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) Two (of the other answers) are true
 * c) very far away
 * d) One focal length in front of the eye
 * e) at infinity

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

T8 E2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

3) When light passes from air to glass
 * a) it bends away from the normal
 * b) it does not bend
 * c) it bends towards the normal
 * d) the frequency increases
 * e) the frequency decreases

4) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

5) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) the Doppler shift
 * c) total external refraction
 * d) total internal reflection
 * e) partial internal absorption

6) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) Two (of the other answers) are true
 * c) at infinity
 * d) One focal length in front of the eye
 * e) directly in front of the eye (almost touching)

7) The law of reflection applies to
 * a) curved surfaces
 * b) only light in a vacuum
 * c) flat surfaces
 * d) telescopes but not microscopes
 * e) both flat and curved surfaces

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

10) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

T8 F0
1) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) partial internal absorption
 * c) total internal reflection
 * d) total external refraction
 * e) the invariance of the speed of light

2) When light passes from air to glass
 * a) the frequency increases
 * b) the frequency decreases
 * c) it bends towards the normal
 * d) it bends away from the normal
 * e) it does not bend

3) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they are forming an image
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they are parallel to each other
 * e) rays meet if they were parallel to the optical axis before striking a lens

4) When light passes from glass to air
 * a) the frequency decreases
 * b) the frequency increases
 * c) it bends towards the normal
 * d) it does not bend
 * e) it bends away from the normal

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) at infinity

T8 F1
1) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

2) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) rays meet whenever they pass through a lens
 * c) rays meet whenever they are forming an image
 * d) the center of the lens
 * e) rays meet if they are parallel to each other

3) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.73 x 10-2 cm
 * b) 1.81 x 10-1 cm
 * c) 5.73 x 10-1 cm
 * d) 1.81 x 100 cm
 * e) 5.73 x 100 cm

4) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

6) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency increases
 * c) the frequency decreases
 * d) it bends away from the normal
 * e) it does not bend

7) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) Two (of the other answers) are true
 * c) at infinity
 * d) directly in front of the eye (almost touching)
 * e) One focal length in front of the eye

8) When light passes from air to glass
 * a) it does not bend
 * b) the frequency decreases
 * c) it bends away from the normal
 * d) the frequency increases
 * e) it bends towards the normal

9) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) partial internal absorption
 * c) total internal reflection
 * d) total external refraction
 * e) the invariance of the speed of light

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

T8 F2
1) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet whenever they pass through a lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) the center of the lens
 * e) rays meet whenever they are forming an image

2) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

3) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) partial internal absorption
 * c) total internal reflection
 * d) the invariance of the speed of light
 * e) the Doppler shift

4) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

5) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * a) 2.49 x 100 cm
 * b) 4.42 x 100 cm
 * c) 7.86 x 100 cm
 * d) 1.4 x 101 cm
 * e) 2.49 x 101 cm

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

7) When light passes from air to glass
 * a) it bends towards the normal
 * b) the frequency decreases
 * c) the frequency increases
 * d) it does not bend
 * e) it bends away from the normal

8) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

9) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) at infinity

10) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency increases
 * c) the frequency decreases
 * d) it does not bend
 * e) it bends away from the normal

T8 G0
1) The law of reflection applies to
 * a) only light in a vacuum
 * b) curved surfaces
 * c) both flat and curved surfaces
 * d) telescopes but not microscopes
 * e) flat surfaces

2) In optics, normal means
 * a) to the right of the optical axis
 * b) parallel to the surface
 * c) to the left of the optical axis
 * d) perpendicular to the surface

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

4) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) the invariance of the speed of light
 * c) total external refraction
 * d) total internal reflection
 * e) partial internal absorption

5) When light passes from air to glass
 * a) the frequency increases
 * b) it does not bend
 * c) it bends towards the normal
 * d) it bends away from the normal
 * e) the frequency decreases

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

7) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

8) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

10) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) at infinity
 * c) One focal length in front of the eye
 * d) very far away
 * e) directly in front of the eye (almost touching)

T8 G1
1) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) it does not bend

2) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) the Doppler shift
 * c) partial internal absorption
 * d) total internal reflection
 * e) total external refraction

3) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

5) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) directly in front of the eye (almost touching)
 * d) One focal length in front of the eye
 * e) Two (of the other answers) are true

6) In optics, normal means
 * a) parallel to the surface
 * b) to the left of the optical axis
 * c) to the right of the optical axis
 * d) perpendicular to the surface

7) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

10) The law of reflection applies to
 * a) flat surfaces
 * b) curved surfaces
 * c) both flat and curved surfaces
 * d) only light in a vacuum
 * e) telescopes but not microscopes

T8 G2
1) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) partial internal absorption
 * c) the Doppler shift
 * d) the invariance of the speed of light
 * e) total external refraction

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

3) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

4) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) at infinity
 * c) Two (of the other answers) are true
 * d) One focal length in front of the eye
 * e) very far away

5) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

6) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) perpendicular to the surface
 * d) to the right of the optical axis

7) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

9) When light passes from air to glass
 * a) it bends towards the normal
 * b) the frequency increases
 * c) it does not bend
 * d) it bends away from the normal
 * e) the frequency decreases

10) The law of reflection applies to
 * a) only light in a vacuum
 * b) flat surfaces
 * c) curved surfaces
 * d) both flat and curved surfaces
 * e) telescopes but not microscopes

T8 H0
1) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) telescopes but not microscopes
 * d) only light in a vacuum
 * e) flat surfaces

2) When light passes from glass to air
 * a) it does not bend
 * b) the frequency decreases
 * c) the frequency increases
 * d) it bends towards the normal
 * e) it bends away from the normal

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

5) The focal point is where
 * a) the center of the lens
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they are parallel to each other
 * e) rays meet whenever they are forming an image

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

7) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

8) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 H1
1) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) only light in a vacuum
 * c) flat surfaces
 * d) curved surfaces
 * e) both flat and curved surfaces

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency decreases
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency increases

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) rays meet whenever they are forming an image
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) the center of the lens

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

8) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

9) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

10) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

T8 H2
1) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

3) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) the center of the lens
 * c) rays meet whenever they are forming an image
 * d) rays meet if they are parallel to each other
 * e) rays meet whenever they pass through a lens

4) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

7) An object of height 0.67 cm is placed 106 cm behind a diverging lens with a focal length of 61 cm. What is the height of the image?


 * a) 1.18 x 10-1 cm
 * b) 1.42 x 10-1 cm
 * c) 1.7 x 10-1 cm
 * d) 2.04 x 10-1 cm
 * e) 2.45 x 10-1 cm

8) When light passes from glass to air
 * a) it bends towards the normal
 * b) it does not bend
 * c) the frequency increases
 * d) it bends away from the normal
 * e) the frequency decreases

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

10) The law of reflection applies to
 * a) curved surfaces
 * b) telescopes but not microscopes
 * c) both flat and curved surfaces
 * d) flat surfaces
 * e) only light in a vacuum

T8 I0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

3) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) total internal reflection
 * c) the Doppler shift
 * d) the invariance of the speed of light
 * e) total external refraction

4) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) rays meet if they are parallel to each other
 * c) the center of the lens
 * d) rays meet whenever they are forming an image
 * e) rays meet whenever they pass through a lens

5) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) both flat and curved surfaces
 * c) only light in a vacuum
 * d) curved surfaces
 * e) flat surfaces

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

8) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) at infinity
 * c) directly in front of the eye (almost touching)
 * d) Two (of the other answers) are true
 * e) very far away

T8 I1
1) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

2) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) the center of the lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) rays meet whenever they are forming an image

3) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) the Doppler shift
 * c) total external refraction
 * d) partial internal absorption
 * e) the invariance of the speed of light

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

5) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) directly in front of the eye (almost touching)
 * c) at infinity
 * d) One focal length in front of the eye
 * e) very far away

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

7) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

8) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

9) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * a) 1.26 x 10-1 cm
 * b) 1.51 x 10-1 cm
 * c) 1.81 x 10-1 cm
 * d) 2.17 x 10-1 cm
 * e) 2.61 x 10-1 cm

10) The law of reflection applies to
 * a) curved surfaces
 * b) both flat and curved surfaces
 * c) flat surfaces
 * d) telescopes but not microscopes
 * e) only light in a vacuum

T8 I2
1) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) One focal length in front of the eye

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

3) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

4) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) the center of the lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they are parallel to each other
 * e) rays meet if they were parallel to the optical axis before striking a lens

5) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) curved surfaces
 * c) flat surfaces
 * d) only light in a vacuum
 * e) both flat and curved surfaces

6) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

7) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the Doppler shift
 * d) partial internal absorption
 * e) the invariance of the speed of light

8) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * a) 1.26 x 10-1 cm
 * b) 1.51 x 10-1 cm
 * c) 1.81 x 10-1 cm
 * d) 2.17 x 10-1 cm
 * e) 2.61 x 10-1 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

T8 J0
1) When light passes from glass to air
 * a) it does not bend
 * b) the frequency decreases
 * c) it bends towards the normal
 * d) the frequency increases
 * e) it bends away from the normal

2) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) the frequency decreases
 * d) it does not bend
 * e) it bends away from the normal

3) In optics, normal means
 * a) to the right of the optical axis
 * b) parallel to the surface
 * c) to the left of the optical axis
 * d) perpendicular to the surface

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

5) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet whenever they are forming an image
 * e) the center of the lens

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

7) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

T8 J1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

3) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) rays meet whenever they are forming an image
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) the center of the lens

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

6) In optics, normal means
 * a) perpendicular to the surface
 * b) to the left of the optical axis
 * c) to the right of the optical axis
 * d) parallel to the surface

7) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

8) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) the frequency increases

9) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

10) When light passes from air to glass
 * a) it does not bend
 * b) it bends away from the normal
 * c) the frequency increases
 * d) it bends towards the normal
 * e) the frequency decreases

T8 J2
1) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

2) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they pass through a lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet whenever they are forming an image
 * e) rays meet if they are parallel to each other

3) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.64 x 100 cm
 * b) 1.78 x 101 cm
 * c) 5.64 x 101 cm
 * d) 1.78 x 102 cm
 * e) 5.64 x 102 cm

4) When light passes from glass to air
 * a) it does not bend
 * b) the frequency increases
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) it bends away from the normal

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

6) In optics, normal means
 * a) parallel to the surface
 * b) to the left of the optical axis
 * c) perpendicular to the surface
 * d) to the right of the optical axis

7) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

8) When light passes from air to glass
 * a) it does not bend
 * b) it bends towards the normal
 * c) the frequency increases
 * d) it bends away from the normal
 * e) the frequency decreases

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

T8 K0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

3) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) the invariance of the speed of light
 * c) total external refraction
 * d) total internal reflection
 * e) the Doppler shift

4) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) telescopes but not microscopes
 * c) flat surfaces
 * d) curved surfaces
 * e) only light in a vacuum

5) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency increases
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) it does not bend

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

7) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.73 x 10-2 cm
 * b) 1.81 x 10-1 cm
 * c) 5.73 x 10-1 cm
 * d) 1.81 x 100 cm
 * e) 5.73 x 100 cm

8) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) very far away
 * c) at infinity
 * d) One focal length in front of the eye
 * e) Two (of the other answers) are true

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

T8 K1
1) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

2) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) partial internal absorption
 * c) total internal reflection
 * d) the Doppler shift
 * e) total external refraction

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

4) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.73 x 10-2 cm
 * b) 1.81 x 10-1 cm
 * c) 5.73 x 10-1 cm
 * d) 1.81 x 100 cm
 * e) 5.73 x 100 cm

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

6) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) One focal length in front of the eye
 * c) Two (of the other answers) are true
 * d) at infinity
 * e) very far away

7) When light passes from glass to air
 * a) it does not bend
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) it bends towards the normal
 * e) the frequency increases

8) The law of reflection applies to
 * a) flat surfaces
 * b) telescopes but not microscopes
 * c) curved surfaces
 * d) only light in a vacuum
 * e) both flat and curved surfaces

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 K2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

4) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) the Doppler shift
 * c) partial internal absorption
 * d) total internal reflection
 * e) the invariance of the speed of light

5) The law of reflection applies to
 * a) curved surfaces
 * b) telescopes but not microscopes
 * c) flat surfaces
 * d) both flat and curved surfaces
 * e) only light in a vacuum

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

7) When light passes from glass to air
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it does not bend
 * d) it bends away from the normal
 * e) the frequency increases

8) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) Two (of the other answers) are true
 * c) very far away
 * d) directly in front of the eye (almost touching)
 * e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

10) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

T8 L0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

2) When light passes from air to glass
 * a) it bends towards the normal
 * b) it does not bend
 * c) the frequency increases
 * d) the frequency decreases
 * e) it bends away from the normal

3) In optics, normal means
 * a) to the right of the optical axis
 * b) parallel to the surface
 * c) perpendicular to the surface
 * d) to the left of the optical axis

4) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) partial internal absorption
 * c) total internal reflection
 * d) the invariance of the speed of light
 * e) total external refraction

5) When light passes from glass to air
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) the frequency increases
 * d) the frequency decreases
 * e) it does not bend

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 L1
1) When light passes from air to glass
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency increases
 * e) it bends away from the normal

2) In optics, normal means
 * a) parallel to the surface
 * b) to the left of the optical axis
 * c) to the right of the optical axis
 * d) perpendicular to the surface

3) When light passes from glass to air
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency increases

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

5) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

7) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) very far away
 * c) at infinity
 * d) Two (of the other answers) are true
 * e) One focal length in front of the eye

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) partial internal absorption
 * c) the invariance of the speed of light
 * d) total internal reflection
 * e) the Doppler shift

T8 L2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

3) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) One focal length in front of the eye
 * c) at infinity
 * d) Two (of the other answers) are true
 * e) directly in front of the eye (almost touching)

4) In optics, normal means
 * a) to the left of the optical axis
 * b) perpendicular to the surface
 * c) to the right of the optical axis
 * d) parallel to the surface

5) When light passes from air to glass
 * a) it bends away from the normal
 * b) the frequency increases
 * c) it does not bend
 * d) it bends towards the normal
 * e) the frequency decreases

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

7) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) total external refraction
 * c) total internal reflection
 * d) partial internal absorption
 * e) the Doppler shift

8) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

10) When light passes from glass to air
 * a) it does not bend
 * b) the frequency increases
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) it bends away from the normal

T8 M0
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) The law of reflection applies to
 * a) curved surfaces
 * b) only light in a vacuum
 * c) flat surfaces
 * d) both flat and curved surfaces
 * e) telescopes but not microscopes

3) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency decreases

4) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet whenever they are forming an image
 * c) the center of the lens
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) rays meet whenever they pass through a lens

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

7) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

9) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) Two (of the other answers) are true
 * c) One focal length in front of the eye
 * d) directly in front of the eye (almost touching)
 * e) at infinity

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 M1
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

3) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they are forming an image
 * d) rays meet if they are parallel to each other
 * e) the center of the lens

4) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) only light in a vacuum
 * c) telescopes but not microscopes
 * d) flat surfaces
 * e) curved surfaces

5) When light passes from air to glass
 * a) it bends towards the normal
 * b) it does not bend
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) the frequency increases

6) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

9) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) One focal length in front of the eye
 * d) directly in front of the eye (almost touching)
 * e) Two (of the other answers) are true

T8 M2
1) When light passes from air to glass
 * a) the frequency increases
 * b) it bends away from the normal
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) it does not bend

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

4) The law of reflection applies to
 * a) curved surfaces
 * b) only light in a vacuum
 * c) telescopes but not microscopes
 * d) both flat and curved surfaces
 * e) flat surfaces

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

7) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) very far away
 * c) directly in front of the eye (almost touching)
 * d) at infinity
 * e) Two (of the other answers) are true

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

9) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they pass through a lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet whenever they are forming an image
 * e) rays meet if they are parallel to each other

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 N0
1) When light passes from glass to air
 * a) it bends away from the normal
 * b) it does not bend
 * c) the frequency increases
 * d) the frequency decreases
 * e) it bends towards the normal

2) In optics, normal means
 * a) to the right of the optical axis
 * b) parallel to the surface
 * c) perpendicular to the surface
 * d) to the left of the optical axis

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see a distant object

4) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) rays meet whenever they are forming an image
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) the center of the lens

5) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) both flat and curved surfaces
 * c) curved surfaces
 * d) only light in a vacuum
 * e) flat surfaces

6) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

9) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

T8 N1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

3) In optics, normal means
 * a) perpendicular to the surface
 * b) parallel to the surface
 * c) to the left of the optical axis
 * d) to the right of the optical axis

4) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

5) The law of reflection applies to
 * a) flat surfaces
 * b) telescopes but not microscopes
 * c) only light in a vacuum
 * d) curved surfaces
 * e) both flat and curved surfaces

6) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

8) When light passes from glass to air
 * a) the frequency increases
 * b) it bends away from the normal
 * c) it does not bend
 * d) the frequency decreases
 * e) it bends towards the normal

9) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet whenever they are forming an image
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) the center of the lens
 * e) rays meet whenever they pass through a lens

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 N2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

5) When light passes from glass to air
 * a) the frequency decreases
 * b) the frequency increases
 * c) it bends away from the normal
 * d) it does not bend
 * e) it bends towards the normal

6) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

7) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet whenever they pass through a lens
 * c) rays meet whenever they are forming an image
 * d) the center of the lens
 * e) rays meet if they were parallel to the optical axis before striking a lens

8) In optics, normal means
 * a) perpendicular to the surface
 * b) parallel to the surface
 * c) to the right of the optical axis
 * d) to the left of the optical axis

9) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

10) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) only light in a vacuum
 * c) curved surfaces
 * d) telescopes but not microscopes
 * e) flat surfaces

T8 O0
1) When light passes from glass to air
 * a) the frequency increases
 * b) the frequency decreases
 * c) it bends towards the normal
 * d) it does not bend
 * e) it bends away from the normal

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

3) In optics, normal means
 * a) parallel to the surface
 * b) perpendicular to the surface
 * c) to the right of the optical axis
 * d) to the left of the optical axis

4) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the Doppler shift
 * d) the invariance of the speed of light
 * e) partial internal absorption

5) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they are forming an image
 * c) rays meet if they are parallel to each other
 * d) rays meet whenever they pass through a lens
 * e) rays meet if they were parallel to the optical axis before striking a lens

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * a) 2.15 x 10-1 cm
 * b) 3.83 x 10-1 cm
 * c) 6.81 x 10-1 cm
 * d) 1.21 x 100 cm
 * e) 2.15 x 100 cm

7) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

T8 O1
1) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

2) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

3) When light passes from glass to air
 * a) it bends away from the normal
 * b) it does not bend
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) the frequency increases

4) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the Doppler shift
 * d) partial internal absorption
 * e) the invariance of the speed of light

5) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

7) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) to the left of the optical axis
 * d) perpendicular to the surface

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

9) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) the center of the lens
 * c) rays meet whenever they are forming an image
 * d) rays meet if they are parallel to each other
 * e) rays meet if they were parallel to the optical axis before striking a lens

10)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

T8 O2
1) In optics, normal means
 * a) to the right of the optical axis
 * b) parallel to the surface
 * c) to the left of the optical axis
 * d) perpendicular to the surface

2) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) total external refraction
 * c) total internal reflection
 * d) partial internal absorption
 * e) the Doppler shift

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) the center of the lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) rays meet if they are parallel to each other

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

6) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

7) When light passes from glass to air
 * a) the frequency increases
 * b) it bends away from the normal
 * c) it bends towards the normal
 * d) it does not bend
 * e) the frequency decreases

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

9) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

T8 P0
1) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they pass through a lens
 * d) the center of the lens
 * e) rays meet whenever they are forming an image

2) In optics, normal means
 * a) perpendicular to the surface
 * b) to the right of the optical axis
 * c) parallel to the surface
 * d) to the left of the optical axis

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

4) When light passes from glass to air
 * a) it does not bend
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) the frequency increases
 * e) it bends towards the normal

5) When light passes from air to glass
 * a) the frequency increases
 * b) it does not bend
 * c) it bends away from the normal
 * d) it bends towards the normal
 * e) the frequency decreases

6) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * a) 1.03 x 101 cm
 * b) 1.84 x 101 cm
 * c) 3.27 x 101 cm
 * d) 5.81 x 101 cm
 * e) 1.03 x 102 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

8) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) Two (of the other answers) are true
 * c) at infinity
 * d) One focal length in front of the eye
 * e) directly in front of the eye (almost touching)

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

T8 P1
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

4) When light passes from air to glass
 * a) the frequency decreases
 * b) the frequency increases
 * c) it bends away from the normal
 * d) it does not bend
 * e) it bends towards the normal

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

6) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they are forming an image
 * d) rays meet whenever they pass through a lens
 * e) the center of the lens

7) When light passes from glass to air
 * a) it bends away from the normal
 * b) it does not bend
 * c) it bends towards the normal
 * d) the frequency increases
 * e) the frequency decreases

8) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) One focal length in front of the eye
 * c) Two (of the other answers) are true
 * d) directly in front of the eye (almost touching)
 * e) at infinity

9) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) to the right of the optical axis
 * d) perpendicular to the surface

10) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm

T8 P2
1) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

2) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) Two (of the other answers) are true
 * c) One focal length in front of the eye
 * d) at infinity
 * e) very far away

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) When light passes from glass to air
 * a) it bends towards the normal
 * b) the frequency decreases
 * c) the frequency increases
 * d) it does not bend
 * e) it bends away from the normal

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

7) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they pass through a lens
 * c) rays meet whenever they are forming an image
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) rays meet if they are parallel to each other

8) When light passes from air to glass
 * a) it bends away from the normal
 * b) the frequency decreases
 * c) the frequency increases
 * d) it bends towards the normal
 * e) it does not bend

9) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) perpendicular to the surface
 * d) to the left of the optical axis

10) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

T8 Q0
1) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) curved surfaces
 * c) only light in a vacuum
 * d) flat surfaces
 * e) both flat and curved surfaces

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

3) When light passes from air to glass
 * a) it bends towards the normal
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) the frequency increases
 * e) it does not bend

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

5) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) rays meet whenever they pass through a lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet if they are parallel to each other
 * e) the center of the lens

6) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

8) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

9) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) very far away
 * c) One focal length in front of the eye
 * d) directly in front of the eye (almost touching)
 * e) at infinity

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

T8 Q1
1) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

3) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * a) 1.17 x 100 cm
 * b) 2.07 x 100 cm
 * c) 3.69 x 100 cm
 * d) 6.56 x 100 cm
 * e) 1.17 x 101 cm

4) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) Two (of the other answers) are true
 * d) One focal length in front of the eye
 * e) directly in front of the eye (almost touching)

5) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * a) 1.03 x 101 cm
 * b) 1.84 x 101 cm
 * c) 3.27 x 101 cm
 * d) 5.81 x 101 cm
 * e) 1.03 x 102 cm

6) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

8) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) rays meet if they are parallel to each other
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) the center of the lens
 * e) rays meet whenever they pass through a lens

9) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) it does not bend

10) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) only light in a vacuum
 * d) flat surfaces
 * e) telescopes but not microscopes

T8 Q2
1) When light passes from air to glass
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency decreases
 * e) the frequency increases

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) rays meet whenever they are forming an image
 * c) rays meet if they are parallel to each other
 * d) the center of the lens
 * e) rays meet whenever they pass through a lens

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

5) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

7) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

8) The law of reflection applies to
 * a) curved surfaces
 * b) telescopes but not microscopes
 * c) only light in a vacuum
 * d) both flat and curved surfaces
 * e) flat surfaces

9) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) directly in front of the eye (almost touching)
 * c) Two (of the other answers) are true
 * d) One focal length in front of the eye
 * e) at infinity

T8 R0
1) When light passes from air to glass
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency decreases

2) The law of reflection applies to
 * a) curved surfaces
 * b) both flat and curved surfaces
 * c) flat surfaces
 * d) only light in a vacuum
 * e) telescopes but not microscopes

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

5) In optics, normal means
 * a) to the right of the optical axis
 * b) perpendicular to the surface
 * c) parallel to the surface
 * d) to the left of the optical axis

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 2.01 x 100 cm
 * b) 3.57 x 100 cm
 * c) 6.34 x 100 cm
 * d) 1.13 x 101 cm
 * e) 2.01 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 R1
1) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) flat surfaces
 * c) both flat and curved surfaces
 * d) curved surfaces
 * e) only light in a vacuum

2) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

3) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) perpendicular to the surface
 * d) to the left of the optical axis

4) When light passes from air to glass
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) it does not bend
 * e) the frequency increases

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

7) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray drawing eye schematic02.svg

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

T8 R2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

2) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

3) When light passes from air to glass
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency increases
 * e) it bends away from the normal

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see a distant object

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

8) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

9) In optics, normal means
 * a) parallel to the surface
 * b) to the left of the optical axis
 * c) to the right of the optical axis
 * d) perpendicular to the surface

10) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) flat surfaces
 * c) telescopes but not microscopes
 * d) curved surfaces
 * e) only light in a vacuum

T8 S0
1) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) partial internal absorption
 * c) total internal reflection
 * d) the Doppler shift
 * e) the invariance of the speed of light

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

3) In optics, normal means
 * a) to the left of the optical axis
 * b) perpendicular to the surface
 * c) to the right of the optical axis
 * d) parallel to the surface

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

5) When light passes from glass to air
 * a) the frequency increases
 * b) it bends away from the normal
 * c) it does not bend
 * d) the frequency decreases
 * e) it bends towards the normal

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

8) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) at infinity

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

T8 S1
1) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

2) When light passes from glass to air
 * a) it does not bend
 * b) it bends away from the normal
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) the frequency increases

3) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

6) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

8) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) the invariance of the speed of light
 * c) total external refraction
 * d) the Doppler shift
 * e) partial internal absorption

9) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) One focal length in front of the eye
 * c) very far away
 * d) directly in front of the eye (almost touching)
 * e) Two (of the other answers) are true

10) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) perpendicular to the surface
 * d) to the right of the optical axis

T8 S2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) to the left of the optical axis
 * d) perpendicular to the surface

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

7) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) partial internal absorption
 * c) the invariance of the speed of light
 * d) total internal reflection
 * e) total external refraction

8) When light passes from glass to air
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency increases
 * e) it bends away from the normal

9) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

10) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) One focal length in front of the eye
 * c) very far away
 * d) at infinity
 * e) directly in front of the eye (almost touching)

T8 T0
1) The law of reflection applies to
 * a) only light in a vacuum
 * b) telescopes but not microscopes
 * c) curved surfaces
 * d) flat surfaces
 * e) both flat and curved surfaces

2) In optics, normal means
 * a) to the right of the optical axis
 * b) perpendicular to the surface
 * c) to the left of the optical axis
 * d) parallel to the surface

3) When light passes from air to glass
 * a) it does not bend
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency increases
 * e) the frequency decreases

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

5) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) the invariance of the speed of light
 * c) partial internal absorption
 * d) total external refraction
 * e) total internal reflection

6) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

7) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

8) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

T8 T1
1) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) total internal reflection
 * c) partial internal absorption
 * d) the invariance of the speed of light
 * e) total external refraction

2) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

3) When light passes from air to glass
 * a) the frequency decreases
 * b) it bends towards the normal
 * c) the frequency increases
 * d) it does not bend
 * e) it bends away from the normal

4) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) to the right of the optical axis
 * d) perpendicular to the surface

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see a distant object

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

8) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

9) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) only light in a vacuum
 * d) telescopes but not microscopes
 * e) flat surfaces

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 T2
1) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

2) In optics, normal means
 * a) parallel to the surface
 * b) to the right of the optical axis
 * c) perpendicular to the surface
 * d) to the left of the optical axis

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

4) When light passes from air to glass
 * a) it does not bend
 * b) the frequency increases
 * c) it bends towards the normal
 * d) it bends away from the normal
 * e) the frequency decreases

5) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) flat surfaces
 * c) both flat and curved surfaces
 * d) only light in a vacuum
 * e) curved surfaces

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

7) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

8) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

9) An important principle that allows fiber optics to work is
 * a) the Doppler shift
 * b) the invariance of the speed of light
 * c) partial internal absorption
 * d) total internal reflection
 * e) total external refraction

10) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * a) 2.49 x 100 cm
 * b) 4.42 x 100 cm
 * c) 7.86 x 100 cm
 * d) 1.4 x 101 cm
 * e) 2.49 x 101 cm

T8 U0
1) When light passes from glass to air
 * a) the frequency increases
 * b) it bends towards the normal
 * c) it does not bend
 * d) the frequency decreases
 * e) it bends away from the normal

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

3) In optics, normal means
 * a) to the right of the optical axis
 * b) to the left of the optical axis
 * c) parallel to the surface
 * d) perpendicular to the surface

4) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the Doppler shift
 * d) partial internal absorption
 * e) the invariance of the speed of light

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) directly in front of the eye (almost touching)
 * c) One focal length in front of the eye
 * d) Two (of the other answers) are true
 * e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

10) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

T8 U1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

2) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye Wrong Answer.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye schematic02.svg

4) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

5) In optics, normal means
 * a) perpendicular to the surface
 * b) parallel to the surface
 * c) to the left of the optical axis
 * d) to the right of the optical axis

6) An important principle that allows fiber optics to work is
 * a) total external refraction
 * b) the invariance of the speed of light
 * c) total internal reflection
 * d) partial internal absorption
 * e) the Doppler shift

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see an object that is too close for comfort

8) When light passes from glass to air
 * a) it does not bend
 * b) the frequency increases
 * c) it bends away from the normal
 * d) it bends towards the normal
 * e) the frequency decreases

9) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) directly in front of the eye (almost touching)
 * d) Two (of the other answers) are true
 * e) One focal length in front of the eye

T8 U2
1) In optics, normal means
 * a) to the right of the optical axis
 * b) to the left of the optical axis
 * c) perpendicular to the surface
 * d) parallel to the surface

2) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) the Doppler shift
 * c) the invariance of the speed of light
 * d) total external refraction
 * e) partial internal absorption

3) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm

4) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) the frequency increases
 * d) the frequency decreases
 * e) it bends away from the normal

5) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) One focal length in front of the eye
 * c) at infinity
 * d) very far away
 * e) Two (of the other answers) are true

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

7) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.64 x 100 cm
 * b) 1.78 x 101 cm
 * c) 5.64 x 101 cm
 * d) 1.78 x 102 cm
 * e) 5.64 x 102 cm

8) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

10)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

T8 V0
1) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency increases
 * e) the frequency decreases

2) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) partial internal absorption
 * c) total internal reflection
 * d) the Doppler shift
 * e) total external refraction

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see a distant object

4) The law of reflection applies to
 * a) curved surfaces
 * b) flat surfaces
 * c) both flat and curved surfaces
 * d) only light in a vacuum
 * e) telescopes but not microscopes

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.65 x 10-1 cm
 * b) 3.18 x 10-1 cm
 * c) 3.82 x 10-1 cm
 * d) 4.58 x 10-1 cm
 * e) 5.49 x 10-1 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

9) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

10) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) at infinity
 * c) very far away
 * d) directly in front of the eye (almost touching)
 * e) Two (of the other answers) are true

T8 V1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see an object that is too close for comfort

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

3) If this represents the eye looking at an object, where is this object?
 * a) very far away
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) at infinity
 * e) One focal length in front of the eye

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

5) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * a) 2.62 x 10-1 cm
 * b) 3.14 x 10-1 cm
 * c) 3.77 x 10-1 cm
 * d) 4.53 x 10-1 cm
 * e) 5.43 x 10-1 cm

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 6.02 x 10-1 cm
 * b) 1.9 x 100 cm
 * c) 6.02 x 100 cm
 * d) 1.9 x 101 cm
 * e) 6.02 x 101 cm

7) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

8) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) total external refraction
 * c) the invariance of the speed of light
 * d) the Doppler shift
 * e) partial internal absorption

9) When light passes from glass to air
 * a) the frequency increases
 * b) it does not bend
 * c) the frequency decreases
 * d) it bends away from the normal
 * e) it bends towards the normal

10) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) curved surfaces
 * c) both flat and curved surfaces
 * d) flat surfaces
 * e) only light in a vacuum

T8 V2
1) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) Two (of the other answers) are true
 * c) very far away
 * d) at infinity
 * e) One focal length in front of the eye

2) The law of reflection applies to
 * a) curved surfaces
 * b) only light in a vacuum
 * c) telescopes but not microscopes
 * d) flat surfaces
 * e) both flat and curved surfaces

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) partial internal absorption
 * c) the invariance of the speed of light
 * d) the Doppler shift
 * e) total external refraction

5) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

6) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * a) 1.26 x 10-1 cm
 * b) 1.51 x 10-1 cm
 * c) 1.81 x 10-1 cm
 * d) 2.17 x 10-1 cm
 * e) 2.61 x 10-1 cm

7) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.64 x 100 cm
 * b) 1.78 x 101 cm
 * c) 5.64 x 101 cm
 * d) 1.78 x 102 cm
 * e) 5.64 x 102 cm

8) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

10) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) the frequency decreases
 * d) it bends away from the normal
 * e) the frequency increases

T8 W0
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

2) The focal point is where
 * a) rays meet if they were parallel to the optical axis before striking a lens
 * b) rays meet whenever they are forming an image
 * c) rays meet whenever they pass through a lens
 * d) the center of the lens
 * e) rays meet if they are parallel to each other

3) In optics, normal means
 * a) perpendicular to the surface
 * b) to the right of the optical axis
 * c) parallel to the surface
 * d) to the left of the optical axis

4) When light passes from air to glass
 * a) it bends away from the normal
 * b) the frequency increases
 * c) it does not bend
 * d) the frequency decreases
 * e) it bends towards the normal

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

8) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) very far away
 * c) Two (of the other answers) are true
 * d) directly in front of the eye (almost touching)
 * e) at infinity

T8 W1
1) When light passes from air to glass
 * a) the frequency increases
 * b) the frequency decreases
 * c) it does not bend
 * d) it bends away from the normal
 * e) it bends towards the normal

2) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * a) 1.36 x 10-1 cm
 * b) 1.63 x 10-1 cm
 * c) 1.96 x 10-1 cm
 * d) 2.35 x 10-1 cm
 * e) 2.82 x 10-1 cm

3) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) In optics, normal means
 * a) to the left of the optical axis
 * b) perpendicular to the surface
 * c) to the right of the optical axis
 * d) parallel to the surface

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see a distant object

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

8) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) Two (of the other answers) are true
 * d) One focal length in front of the eye
 * e) directly in front of the eye (almost touching)

9) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

10) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) the center of the lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet whenever they pass through a lens
 * e) rays meet if they are parallel to each other

T8 W2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

2) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) They have the same focal lengh.
 * c) Ray_drawing_eye_schematic.svg

3) When light passes from air to glass
 * a) the frequency increases
 * b) the frequency decreases
 * c) it bends away from the normal
 * d) it bends towards the normal
 * e) it does not bend

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they are parallel to each other
 * e) the center of the lens

6) In optics, normal means
 * a) to the left of the optical axis
 * b) parallel to the surface
 * c) to the right of the optical axis
 * d) perpendicular to the surface

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see an object that is too close for comfort
 * c) how a farsighted person might see a distant object
 * d) how a nearsighted person might see a distant object

8) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) very far away
 * c) Two (of the other answers) are true
 * d) directly in front of the eye (almost touching)
 * e) One focal length in front of the eye

9) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * a) 3.64 x 10-1 cm
 * b) 6.47 x 10-1 cm
 * c) 1.15 x 100 cm
 * d) 2.04 x 100 cm
 * e) 3.64 x 100 cm

10) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * a) 2.77 x 10-1 cm
 * b) 3.32 x 10-1 cm
 * c) 3.99 x 10-1 cm
 * d) 4.78 x 10-1 cm
 * e) 5.74 x 10-1 cm

T8 X0
1) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) telescopes but not microscopes
 * d) flat surfaces
 * e) only light in a vacuum

2) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) the center of the lens
 * d) rays meet whenever they are forming an image
 * e) rays meet if they were parallel to the optical axis before striking a lens

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see an object that is too close for comfort
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

4) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) the frequency increases

5) When light passes from air to glass
 * a) it does not bend
 * b) the frequency increases
 * c) it bends away from the normal
 * d) it bends towards the normal
 * e) the frequency decreases

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.81 x 10-1 cm
 * b) 5.71 x 10-1 cm
 * c) 1.81 x 100 cm
 * d) 5.71 x 100 cm
 * e) 1.81 x 101 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

8) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

T8 X1
1) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray_drawing_eye_schematic.svg
 * c) Ray drawing eye schematic01.svg

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

3) The focal point is where
 * a) rays meet if they are parallel to each other
 * b) rays meet whenever they pass through a lens
 * c) rays meet if they were parallel to the optical axis before striking a lens
 * d) rays meet whenever they are forming an image
 * e) the center of the lens

4) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

5) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) curved surfaces
 * c) telescopes but not microscopes
 * d) only light in a vacuum
 * e) flat surfaces

6) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.64 x 100 cm
 * b) 1.78 x 101 cm
 * c) 5.64 x 101 cm
 * d) 1.78 x 102 cm
 * e) 5.64 x 102 cm

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

8) When light passes from air to glass
 * a) the frequency increases
 * b) the frequency decreases
 * c) it does not bend
 * d) it bends away from the normal
 * e) it bends towards the normal

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray_drawing_eye_schematic_alternate.svg
 * c) Ray drawing eye Wrong Answer.svg

10) When light passes from glass to air
 * a) the frequency increases
 * b) it bends away from the normal
 * c) the frequency decreases
 * d) it does not bend
 * e) it bends towards the normal

T8 X2
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

4) When light passes from air to glass
 * a) it bends away from the normal
 * b) it bends towards the normal
 * c) the frequency increases
 * d) the frequency decreases
 * e) it does not bend

5) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * a) 4.06 x 100 cm
 * b) 7.22 x 100 cm
 * c) 1.28 x 101 cm
 * d) 2.28 x 101 cm
 * e) 4.06 x 101 cm

6) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) They have the same focal lengh.
 * c) Ray drawing eye schematic01.svg

7) When light passes from glass to air
 * a) the frequency increases
 * b) the frequency decreases
 * c) it does not bend
 * d) it bends towards the normal
 * e) it bends away from the normal

8) The law of reflection applies to
 * a) curved surfaces
 * b) both flat and curved surfaces
 * c) telescopes but not microscopes
 * d) flat surfaces
 * e) only light in a vacuum

9) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.73 x 10-2 cm
 * b) 1.81 x 10-1 cm
 * c) 5.73 x 10-1 cm
 * d) 1.81 x 100 cm
 * e) 5.73 x 100 cm

10) The focal point is where
 * a) the center of the lens
 * b) rays meet whenever they are forming an image
 * c) rays meet whenever they pass through a lens
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) rays meet if they are parallel to each other

T8 Y0
1) The law of reflection applies to
 * a) both flat and curved surfaces
 * b) flat surfaces
 * c) only light in a vacuum
 * d) curved surfaces
 * e) telescopes but not microscopes

2) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) total external refraction
 * c) total internal reflection
 * d) partial internal absorption
 * e) the Doppler shift

3) When light passes from air to glass
 * a) the frequency decreases
 * b) it bends away from the normal
 * c) it does not bend
 * d) it bends towards the normal
 * e) the frequency increases

4) The focal point is where
 * a) rays meet whenever they are forming an image
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) rays meet whenever they pass through a lens
 * d) the center of the lens
 * e) rays meet if they are parallel to each other

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see a distant object
 * d) how a farsighted person might see an object that is too close for comfort

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 1.88 x 100 cm
 * b) 5.94 x 100 cm
 * c) 1.88 x 101 cm
 * d) 5.94 x 101 cm
 * e) 1.88 x 102 cm

7) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * a) Two (of the other answers) are true
 * b) at infinity
 * c) One focal length in front of the eye
 * d) very far away
 * e) directly in front of the eye (almost touching)

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

10) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

T8 Y1
1) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.73 x 10-2 cm
 * b) 1.81 x 10-1 cm
 * c) 5.73 x 10-1 cm
 * d) 1.81 x 100 cm
 * e) 5.73 x 100 cm

2) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) the Doppler shift
 * c) total external refraction
 * d) total internal reflection
 * e) the invariance of the speed of light

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

4) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

5) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a nearsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

7) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) very far away
 * c) One focal length in front of the eye
 * d) at infinity
 * e) Two (of the other answers) are true

8) The law of reflection applies to
 * a) telescopes but not microscopes
 * b) both flat and curved surfaces
 * c) curved surfaces
 * d) only light in a vacuum
 * e) flat surfaces

9) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they are parallel to each other
 * c) rays meet whenever they are forming an image
 * d) rays meet if they were parallel to the optical axis before striking a lens
 * e) the center of the lens

10) When light passes from air to glass
 * a) it does not bend
 * b) the frequency decreases
 * c) the frequency increases
 * d) it bends away from the normal
 * e) it bends towards the normal

T8 Y2
1) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * a) 1.86 x 100 cm
 * b) 3.31 x 100 cm
 * c) 5.88 x 100 cm
 * d) 1.05 x 101 cm
 * e) 1.86 x 101 cm

2) The focal point is where
 * a) rays meet whenever they pass through a lens
 * b) rays meet if they were parallel to the optical axis before striking a lens
 * c) the center of the lens
 * d) rays meet if they are parallel to each other
 * e) rays meet whenever they are forming an image

3) An important principle that allows fiber optics to work is
 * a) total internal reflection
 * b) partial internal absorption
 * c) the Doppler shift
 * d) total external refraction
 * e) the invariance of the speed of light

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * a) true
 * b) false

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a farsighted person might see a distant object
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

6) Which lens has the shorter focal length?
 * a) Ray drawing eye schematic01.svg
 * b) Ray_drawing_eye_schematic.svg
 * c) They have the same focal lengh.

7) When light passes from air to glass
 * a) it bends away from the normal
 * b) the frequency decreases
 * c) it bends towards the normal
 * d) the frequency increases
 * e) it does not bend

8) The law of reflection applies to
 * a) only light in a vacuum
 * b) curved surfaces
 * c) both flat and curved surfaces
 * d) telescopes but not microscopes
 * e) flat surfaces

9) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * a) 5.98 x 10-1 cm
 * b) 1.89 x 100 cm
 * c) 5.98 x 100 cm
 * d) 1.89 x 101 cm
 * e) 5.98 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * a) directly in front of the eye (almost touching)
 * b) at infinity
 * c) One focal length in front of the eye
 * d) Two (of the other answers) are true
 * e) very far away

T8 Z0
1) When light passes from air to glass
 * a) the frequency decreases
 * b) the frequency increases
 * c) it bends away from the normal
 * d) it does not bend
 * e) it bends towards the normal

2) When light passes from glass to air
 * a) it bends towards the normal
 * b) it does not bend
 * c) the frequency increases
 * d) the frequency decreases
 * e) it bends away from the normal

3) An important principle that allows fiber optics to work is
 * a) the invariance of the speed of light
 * b) partial internal absorption
 * c) the Doppler shift
 * d) total external refraction
 * e) total internal reflection

4) The law of reflection applies to
 * a) curved surfaces
 * b) flat surfaces
 * c) telescopes but not microscopes
 * d) both flat and curved surfaces
 * e) only light in a vacuum

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a nearsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a farsighted person might see a distant object

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * a) 2.49 x 100 cm
 * b) 4.42 x 100 cm
 * c) 7.86 x 100 cm
 * d) 1.4 x 101 cm
 * e) 2.49 x 101 cm

7) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * a) 4.18 x 100 cm
 * b) 7.43 x 100 cm
 * c) 1.32 x 101 cm
 * d) 2.35 x 101 cm
 * e) 4.18 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * a) One focal length in front of the eye
 * b) at infinity
 * c) very far away
 * d) Two (of the other answers) are true
 * e) directly in front of the eye (almost touching)

T8 Z1
1) When light passes from glass to air
 * a) it does not bend
 * b) it bends towards the normal
 * c) it bends away from the normal
 * d) the frequency decreases
 * e) the frequency increases

2) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm

3) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see an object that is too close for comfort
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see a distant object

5) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) the invariance of the speed of light
 * c) total internal reflection
 * d) total external refraction
 * e) the Doppler shift

6) Which lens has the shorter focal length?
 * a) Ray_drawing_eye_schematic.svg
 * b) Ray drawing eye schematic01.svg
 * c) They have the same focal lengh.

7) When light passes from air to glass
 * a) it does not bend
 * b) it bends away from the normal
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) the frequency increases

8) The law of reflection applies to
 * a) only light in a vacuum
 * b) both flat and curved surfaces
 * c) curved surfaces
 * d) flat surfaces
 * e) telescopes but not microscopes

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray_drawing_eye_schematic_alternate.svg
 * b) Ray drawing eye schematic02.svg
 * c) Ray drawing eye Wrong Answer.svg

10) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) One focal length in front of the eye
 * c) very far away
 * d) Two (of the other answers) are true
 * e) directly in front of the eye (almost touching)

T8 Z2
1) When light passes from glass to air
 * a) the frequency decreases
 * b) it does not bend
 * c) the frequency increases
 * d) it bends away from the normal
 * e) it bends towards the normal

2) Which lens has the shorter focal length?
 * a) They have the same focal lengh.
 * b) Ray drawing eye schematic01.svg
 * c) Ray_drawing_eye_schematic.svg

3) The law of reflection applies to
 * a) flat surfaces
 * b) telescopes but not microscopes
 * c) curved surfaces
 * d) only light in a vacuum
 * e) both flat and curved surfaces

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * a) how a nearsighted person might see a distant object
 * b) how a farsighted person might see a distant object
 * c) how a farsighted person might see an object that is too close for comfort
 * d) how a nearsighted person might see an object that is too close for comfort

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * a) 7.79 x 10-1 cm
 * b) 1.39 x 100 cm
 * c) 2.46 x 100 cm
 * d) 4.38 x 100 cm
 * e) 7.79 x 100 cm

6) When light passes from air to glass
 * a) the frequency increases
 * b) it does not bend
 * c) it bends towards the normal
 * d) the frequency decreases
 * e) it bends away from the normal

7) An important principle that allows fiber optics to work is
 * a) partial internal absorption
 * b) the invariance of the speed of light
 * c) total internal reflection
 * d) the Doppler shift
 * e) total external refraction

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * a) Ray drawing eye schematic02.svg
 * b) Ray drawing eye Wrong Answer.svg
 * c) Ray_drawing_eye_schematic_alternate.svg

9) If this represents the eye looking at an object, where is this object?
 * a) at infinity
 * b) Two (of the other answers) are true
 * c) directly in front of the eye (almost touching)
 * d) very far away
 * e) One focal length in front of the eye

10) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * a) 3.34 x 100 cm
 * b) 5.95 x 100 cm
 * c) 1.06 x 101 cm
 * d) 1.88 x 101 cm
 * e) 3.34 x 101 cm


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 * 1) of 10 blank lines to separate exams from keys
 * 2) of 10 blank lines to separate exams from keys
 * 3) of 10 blank lines to separate exams from keys
 * 4) of 10 blank lines to separate exams from keys
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 * 9) of 10 blank lines to separate exams from keys
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Key: A0
1) When light passes from glass to air
 * -a) it bends towards the normal
 * +b) it bends away from the normal
 * -c) the frequency increases
 * -d) the frequency decreases
 * -e) it does not bend

2) The law of reflection applies to
 * -a) curved surfaces
 * -b) only light in a vacuum
 * +c) both flat and curved surfaces
 * -d) flat surfaces
 * -e) telescopes but not microscopes

3) In optics, normal means
 * -a) parallel to the surface
 * -b) to the left of the optical axis
 * +c) perpendicular to the surface
 * -d) to the right of the optical axis

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

5) When light passes from air to glass
 * -a) it does not bend
 * -b) the frequency increases
 * -c) the frequency decreases
 * -d) it bends away from the normal
 * +e) it bends towards the normal

6) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

7) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

9) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

Key: A1
1) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency decreases
 * -c) the frequency increases
 * +d) it bends away from the normal
 * -e) it does not bend

2) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

4) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

5) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

6) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) it bends away from the normal
 * -c) the frequency decreases
 * -d) the frequency increases
 * -e) it does not bend

7) The law of reflection applies to
 * -a) flat surfaces
 * -b) only light in a vacuum
 * -c) curved surfaces
 * +d) both flat and curved surfaces
 * -e) telescopes but not microscopes

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

9) In optics, normal means
 * -a) to the right of the optical axis
 * -b) to the left of the optical axis
 * -c) parallel to the surface
 * +d) perpendicular to the surface

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

Key: A2
1) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) it does not bend
 * -d) it bends away from the normal
 * -e) the frequency decreases

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) When light passes from glass to air
 * -a) it does not bend
 * +b) it bends away from the normal
 * -c) the frequency decreases
 * -d) it bends towards the normal
 * -e) the frequency increases

4) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) curved surfaces
 * +c) both flat and curved surfaces
 * -d) telescopes but not microscopes
 * -e) flat surfaces

5) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * -a) 2.49 x 100 cm
 * +b) 4.42 x 100 cm
 * -c) 7.86 x 100 cm
 * -d) 1.4 x 101 cm
 * -e) 2.49 x 101 cm

7) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

8) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: B0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

2) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) only light in a vacuum
 * -d) telescopes but not microscopes
 * -e) flat surfaces

3) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * +c) perpendicular to the surface
 * -d) to the right of the optical axis

4) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency decreases
 * +c) it bends away from the normal
 * -d) it bends towards the normal
 * -e) the frequency increases

5) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * +b) total internal reflection
 * -c) partial internal absorption
 * -d) total external refraction
 * -e) the Doppler shift

6) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

7) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) very far away
 * -d) at infinity
 * -e) directly in front of the eye (almost touching)

Key: B1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

3) When light passes from glass to air
 * +a) it bends away from the normal
 * -b) the frequency decreases
 * -c) it does not bend
 * -d) the frequency increases
 * -e) it bends towards the normal

4) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

6) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * -a) 1.03 x 101 cm
 * +b) 1.84 x 101 cm
 * -c) 3.27 x 101 cm
 * -d) 5.81 x 101 cm
 * -e) 1.03 x 102 cm

7) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) very far away
 * -c) directly in front of the eye (almost touching)
 * -d) at infinity
 * +e) Two (of the other answers) are true

8) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * +b) total internal reflection
 * -c) the invariance of the speed of light
 * -d) partial internal absorption
 * -e) the Doppler shift

9) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) flat surfaces
 * -c) telescopes but not microscopes
 * -d) curved surfaces
 * -e) only light in a vacuum

10) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

Key: B2
1) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) partial internal absorption
 * -c) total external refraction
 * -d) the Doppler shift
 * -e) the invariance of the speed of light

2) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) In optics, normal means
 * -a) to the right of the optical axis
 * -b) to the left of the optical axis
 * +c) perpendicular to the surface
 * -d) parallel to the surface

5) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) flat surfaces
 * -c) only light in a vacuum
 * -d) telescopes but not microscopes
 * -e) curved surfaces

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

7) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it does not bend
 * -c) the frequency increases
 * -d) it bends towards the normal
 * +e) it bends away from the normal

8) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) very far away
 * -c) at infinity
 * +d) Two (of the other answers) are true
 * -e) directly in front of the eye (almost touching)

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

10) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * -a) 1.03 x 101 cm
 * +b) 1.84 x 101 cm
 * -c) 3.27 x 101 cm
 * -d) 5.81 x 101 cm
 * -e) 1.03 x 102 cm

Key: C0
1) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency decreases
 * -c) it bends towards the normal
 * -d) the frequency increases
 * +e) it bends away from the normal

2) The law of reflection applies to
 * -a) flat surfaces
 * +b) both flat and curved surfaces
 * -c) only light in a vacuum
 * -d) curved surfaces
 * -e) telescopes but not microscopes

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

5) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * -b) total external refraction
 * -c) the Doppler shift
 * +d) total internal reflection
 * -e) the invariance of the speed of light

6) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

7) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

10) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * +b) Two (of the other answers) are true
 * -c) One focal length in front of the eye
 * -d) very far away
 * -e) at infinity

Key: C1
1) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * -a) 2.49 x 100 cm
 * +b) 4.42 x 100 cm
 * -c) 7.86 x 100 cm
 * -d) 1.4 x 101 cm
 * -e) 2.49 x 101 cm

2) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) at infinity
 * -d) directly in front of the eye (almost touching)
 * -e) very far away

3) The law of reflection applies to
 * -a) flat surfaces
 * -b) curved surfaces
 * -c) only light in a vacuum
 * +d) both flat and curved surfaces
 * -e) telescopes but not microscopes

4) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency increases

5) An object of height 0.67 cm is placed 106 cm behind a diverging lens with a focal length of 61 cm. What is the height of the image?


 * -a) 1.18 x 10-1 cm
 * -b) 1.42 x 10-1 cm
 * -c) 1.7 x 10-1 cm
 * -d) 2.04 x 10-1 cm
 * +e) 2.45 x 10-1 cm

6) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

7) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) partial internal absorption
 * -c) the Doppler shift
 * -d) total external refraction
 * -e) the invariance of the speed of light

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

10) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

Key: C2
1) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) only light in a vacuum
 * +c) both flat and curved surfaces
 * -d) curved surfaces
 * -e) flat surfaces

2) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it does not bend
 * -c) the frequency increases
 * -d) it bends towards the normal
 * +e) it bends away from the normal

3) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

4) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

6) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the Doppler shift
 * -d) the invariance of the speed of light
 * -e) partial internal absorption

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

10) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) at infinity
 * -d) directly in front of the eye (almost touching)
 * -e) very far away

Key: D0
1) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) telescopes but not microscopes
 * -c) curved surfaces
 * +d) both flat and curved surfaces
 * -e) flat surfaces

2) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) rays meet whenever they pass through a lens
 * -c) rays meet whenever they are forming an image
 * -d) the center of the lens
 * -e) rays meet if they are parallel to each other

3) When light passes from air to glass
 * -a) the frequency decreases
 * -b) it does not bend
 * +c) it bends towards the normal
 * -d) it bends away from the normal
 * -e) the frequency increases

4) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) partial internal absorption
 * -c) the invariance of the speed of light
 * -d) the Doppler shift
 * +e) total internal reflection

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) at infinity
 * -c) One focal length in front of the eye
 * +d) Two (of the other answers) are true
 * -e) very far away

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

Key: D1
1) The law of reflection applies to
 * -a) curved surfaces
 * +b) both flat and curved surfaces
 * -c) flat surfaces
 * -d) telescopes but not microscopes
 * -e) only light in a vacuum

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

3) When light passes from air to glass
 * -a) it does not bend
 * +b) it bends towards the normal
 * -c) the frequency increases
 * -d) it bends away from the normal
 * -e) the frequency decreases

4) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

5) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) the center of the lens
 * -c) rays meet whenever they pass through a lens
 * -d) rays meet whenever they are forming an image
 * +e) rays meet if they were parallel to the optical axis before striking a lens

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

7) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) the Doppler shift
 * -c) partial internal absorption
 * +d) total internal reflection
 * -e) total external refraction

8) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

9) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * -b) at infinity
 * +c) Two (of the other answers) are true
 * -d) One focal length in front of the eye
 * -e) directly in front of the eye (almost touching)

10) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

Key: D2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

2) The focal point is where
 * -a) rays meet if they are parallel to each other
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) the center of the lens
 * -d) rays meet whenever they are forming an image
 * -e) rays meet whenever they pass through a lens

3) When light passes from air to glass
 * -a) it bends away from the normal
 * +b) it bends towards the normal
 * -c) the frequency increases
 * -d) it does not bend
 * -e) the frequency decreases

4) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) One focal length in front of the eye
 * -c) directly in front of the eye (almost touching)
 * +d) Two (of the other answers) are true
 * -e) very far away

5) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

6) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) partial internal absorption
 * -c) the Doppler shift
 * +d) total internal reflection
 * -e) the invariance of the speed of light

7) The law of reflection applies to
 * -a) curved surfaces
 * -b) flat surfaces
 * -c) only light in a vacuum
 * -d) telescopes but not microscopes
 * +e) both flat and curved surfaces

8) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

Key: E0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

2) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * +b) total internal reflection
 * -c) the Doppler shift
 * -d) the invariance of the speed of light
 * -e) partial internal absorption

3) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) telescopes but not microscopes
 * +c) both flat and curved surfaces
 * -d) curved surfaces
 * -e) flat surfaces

4) When light passes from air to glass
 * -a) it bends away from the normal
 * +b) it bends towards the normal
 * -c) the frequency decreases
 * -d) it does not bend
 * -e) the frequency increases

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

6) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * -a) 1.26 x 10-1 cm
 * -b) 1.51 x 10-1 cm
 * -c) 1.81 x 10-1 cm
 * -d) 2.17 x 10-1 cm
 * +e) 2.61 x 10-1 cm

7) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

9) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) One focal length in front of the eye
 * -e) very far away

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

Key: E1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

2) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) partial internal absorption
 * -d) the Doppler shift
 * -e) the invariance of the speed of light

5) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

6) The law of reflection applies to
 * -a) curved surfaces
 * +b) both flat and curved surfaces
 * -c) only light in a vacuum
 * -d) telescopes but not microscopes
 * -e) flat surfaces

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see an object that is too close for comfort

8) When light passes from air to glass
 * -a) it bends away from the normal
 * +b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency increases
 * -e) the frequency decreases

9) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * +b) Two (of the other answers) are true
 * -c) very far away
 * -d) One focal length in front of the eye
 * -e) at infinity

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

Key: E2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

3) When light passes from air to glass
 * -a) it bends away from the normal
 * -b) it does not bend
 * +c) it bends towards the normal
 * -d) the frequency increases
 * -e) the frequency decreases

4) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

5) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) the Doppler shift
 * -c) total external refraction
 * +d) total internal reflection
 * -e) partial internal absorption

6) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * +b) Two (of the other answers) are true
 * -c) at infinity
 * -d) One focal length in front of the eye
 * -e) directly in front of the eye (almost touching)

7) The law of reflection applies to
 * -a) curved surfaces
 * -b) only light in a vacuum
 * -c) flat surfaces
 * -d) telescopes but not microscopes
 * +e) both flat and curved surfaces

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

10) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

Key: F0
1) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) total external refraction
 * -e) the invariance of the speed of light

2) When light passes from air to glass
 * -a) the frequency increases
 * -b) the frequency decreases
 * +c) it bends towards the normal
 * -d) it bends away from the normal
 * -e) it does not bend

3) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they are forming an image
 * -c) rays meet whenever they pass through a lens
 * -d) rays meet if they are parallel to each other
 * +e) rays meet if they were parallel to the optical axis before striking a lens

4) When light passes from glass to air
 * -a) the frequency decreases
 * -b) the frequency increases
 * -c) it bends towards the normal
 * -d) it does not bend
 * +e) it bends away from the normal

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) at infinity

Key: F1
1) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

2) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) rays meet whenever they pass through a lens
 * -c) rays meet whenever they are forming an image
 * -d) the center of the lens
 * -e) rays meet if they are parallel to each other

3) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.73 x 10-2 cm
 * -b) 1.81 x 10-1 cm
 * -c) 5.73 x 10-1 cm
 * -d) 1.81 x 100 cm
 * +e) 5.73 x 100 cm

4) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

6) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency increases
 * -c) the frequency decreases
 * +d) it bends away from the normal
 * -e) it does not bend

7) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * +b) Two (of the other answers) are true
 * -c) at infinity
 * -d) directly in front of the eye (almost touching)
 * -e) One focal length in front of the eye

8) When light passes from air to glass
 * -a) it does not bend
 * -b) the frequency decreases
 * -c) it bends away from the normal
 * -d) the frequency increases
 * +e) it bends towards the normal

9) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) total external refraction
 * -e) the invariance of the speed of light

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see an object that is too close for comfort

Key: F2
1) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) rays meet whenever they pass through a lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) the center of the lens
 * -e) rays meet whenever they are forming an image

2) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

3) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) the invariance of the speed of light
 * -e) the Doppler shift

4) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

5) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * -a) 2.49 x 100 cm
 * +b) 4.42 x 100 cm
 * -c) 7.86 x 100 cm
 * -d) 1.4 x 101 cm
 * -e) 2.49 x 101 cm

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

7) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) the frequency decreases
 * -c) the frequency increases
 * -d) it does not bend
 * -e) it bends away from the normal

8) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

9) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) at infinity

10) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency increases
 * -c) the frequency decreases
 * -d) it does not bend
 * +e) it bends away from the normal

Key: G0
1) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) curved surfaces
 * +c) both flat and curved surfaces
 * -d) telescopes but not microscopes
 * -e) flat surfaces

2) In optics, normal means
 * -a) to the right of the optical axis
 * -b) parallel to the surface
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

4) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) the invariance of the speed of light
 * -c) total external refraction
 * +d) total internal reflection
 * -e) partial internal absorption

5) When light passes from air to glass
 * -a) the frequency increases
 * -b) it does not bend
 * +c) it bends towards the normal
 * -d) it bends away from the normal
 * -e) the frequency decreases

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

7) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

8) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

10) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) at infinity
 * -c) One focal length in front of the eye
 * -d) very far away
 * -e) directly in front of the eye (almost touching)

Key: G1
1) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) the frequency decreases
 * -e) it does not bend

2) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) the Doppler shift
 * -c) partial internal absorption
 * +d) total internal reflection
 * -e) total external refraction

3) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

5) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * -c) directly in front of the eye (almost touching)
 * -d) One focal length in front of the eye
 * +e) Two (of the other answers) are true

6) In optics, normal means
 * -a) parallel to the surface
 * -b) to the left of the optical axis
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

7) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

10) The law of reflection applies to
 * -a) flat surfaces
 * -b) curved surfaces
 * +c) both flat and curved surfaces
 * -d) only light in a vacuum
 * -e) telescopes but not microscopes

Key: G2
1) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) partial internal absorption
 * -c) the Doppler shift
 * -d) the invariance of the speed of light
 * -e) total external refraction

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

3) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

4) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) at infinity
 * +c) Two (of the other answers) are true
 * -d) One focal length in front of the eye
 * -e) very far away

5) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

6) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * +c) perpendicular to the surface
 * -d) to the right of the optical axis

7) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

9) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) the frequency increases
 * -c) it does not bend
 * -d) it bends away from the normal
 * -e) the frequency decreases

10) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) flat surfaces
 * -c) curved surfaces
 * +d) both flat and curved surfaces
 * -e) telescopes but not microscopes

Key: H0
1) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) telescopes but not microscopes
 * -d) only light in a vacuum
 * -e) flat surfaces

2) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency decreases
 * -c) the frequency increases
 * -d) it bends towards the normal
 * +e) it bends away from the normal

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

5) The focal point is where
 * -a) the center of the lens
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they pass through a lens
 * -d) rays meet if they are parallel to each other
 * -e) rays meet whenever they are forming an image

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

7) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

8) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: H1
1) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) only light in a vacuum
 * -c) flat surfaces
 * -d) curved surfaces
 * +e) both flat and curved surfaces

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency decreases
 * +c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency increases

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * -c) rays meet whenever they are forming an image
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) the center of the lens

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

8) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

9) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

10) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

Key: H2
1) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

3) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) the center of the lens
 * -c) rays meet whenever they are forming an image
 * -d) rays meet if they are parallel to each other
 * -e) rays meet whenever they pass through a lens

4) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

7) An object of height 0.67 cm is placed 106 cm behind a diverging lens with a focal length of 61 cm. What is the height of the image?


 * -a) 1.18 x 10-1 cm
 * -b) 1.42 x 10-1 cm
 * -c) 1.7 x 10-1 cm
 * -d) 2.04 x 10-1 cm
 * +e) 2.45 x 10-1 cm

8) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) it does not bend
 * -c) the frequency increases
 * +d) it bends away from the normal
 * -e) the frequency decreases

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

10) The law of reflection applies to
 * -a) curved surfaces
 * -b) telescopes but not microscopes
 * +c) both flat and curved surfaces
 * -d) flat surfaces
 * -e) only light in a vacuum

Key: I0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see an object that is too close for comfort
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

3) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * +b) total internal reflection
 * -c) the Doppler shift
 * -d) the invariance of the speed of light
 * -e) total external refraction

4) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) rays meet if they are parallel to each other
 * -c) the center of the lens
 * -d) rays meet whenever they are forming an image
 * -e) rays meet whenever they pass through a lens

5) The law of reflection applies to
 * -a) telescopes but not microscopes
 * +b) both flat and curved surfaces
 * -c) only light in a vacuum
 * -d) curved surfaces
 * -e) flat surfaces

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

8) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) at infinity
 * -c) directly in front of the eye (almost touching)
 * +d) Two (of the other answers) are true
 * -e) very far away

Key: I1
1) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

2) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) the center of the lens
 * -c) rays meet whenever they pass through a lens
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) rays meet whenever they are forming an image

3) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) the Doppler shift
 * -c) total external refraction
 * -d) partial internal absorption
 * -e) the invariance of the speed of light

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

5) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) directly in front of the eye (almost touching)
 * -c) at infinity
 * -d) One focal length in front of the eye
 * -e) very far away

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

7) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

8) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

9) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * -a) 1.26 x 10-1 cm
 * -b) 1.51 x 10-1 cm
 * -c) 1.81 x 10-1 cm
 * -d) 2.17 x 10-1 cm
 * +e) 2.61 x 10-1 cm

10) The law of reflection applies to
 * -a) curved surfaces
 * +b) both flat and curved surfaces
 * -c) flat surfaces
 * -d) telescopes but not microscopes
 * -e) only light in a vacuum

Key: I2
1) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) One focal length in front of the eye

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

3) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

4) The focal point is where
 * -a) rays meet whenever they are forming an image
 * -b) the center of the lens
 * -c) rays meet whenever they pass through a lens
 * -d) rays meet if they are parallel to each other
 * +e) rays meet if they were parallel to the optical axis before striking a lens

5) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) curved surfaces
 * -c) flat surfaces
 * -d) only light in a vacuum
 * +e) both flat and curved surfaces

6) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

7) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the Doppler shift
 * -d) partial internal absorption
 * -e) the invariance of the speed of light

8) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * -a) 1.26 x 10-1 cm
 * -b) 1.51 x 10-1 cm
 * -c) 1.81 x 10-1 cm
 * -d) 2.17 x 10-1 cm
 * +e) 2.61 x 10-1 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

Key: J0
1) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency decreases
 * -c) it bends towards the normal
 * -d) the frequency increases
 * +e) it bends away from the normal

2) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) the frequency decreases
 * -d) it does not bend
 * -e) it bends away from the normal

3) In optics, normal means
 * -a) to the right of the optical axis
 * -b) parallel to the surface
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

5) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet whenever they are forming an image
 * -e) the center of the lens

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

7) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

Key: J1
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

2) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

3) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * -c) rays meet whenever they are forming an image
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) the center of the lens

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

6) In optics, normal means
 * +a) perpendicular to the surface
 * -b) to the left of the optical axis
 * -c) to the right of the optical axis
 * -d) parallel to the surface

7) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

8) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) the frequency decreases
 * -e) the frequency increases

9) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

10) When light passes from air to glass
 * -a) it does not bend
 * -b) it bends away from the normal
 * -c) the frequency increases
 * +d) it bends towards the normal
 * -e) the frequency decreases

Key: J2
1) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

2) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they pass through a lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet whenever they are forming an image
 * -e) rays meet if they are parallel to each other

3) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * +a) 5.64 x 100 cm
 * -b) 1.78 x 101 cm
 * -c) 5.64 x 101 cm
 * -d) 1.78 x 102 cm
 * -e) 5.64 x 102 cm

4) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency increases
 * -c) it bends towards the normal
 * -d) the frequency decreases
 * +e) it bends away from the normal

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

6) In optics, normal means
 * -a) parallel to the surface
 * -b) to the left of the optical axis
 * +c) perpendicular to the surface
 * -d) to the right of the optical axis

7) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

8) When light passes from air to glass
 * -a) it does not bend
 * +b) it bends towards the normal
 * -c) the frequency increases
 * -d) it bends away from the normal
 * -e) the frequency decreases

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

Key: K0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

3) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * -b) the invariance of the speed of light
 * -c) total external refraction
 * +d) total internal reflection
 * -e) the Doppler shift

4) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) telescopes but not microscopes
 * -c) flat surfaces
 * -d) curved surfaces
 * -e) only light in a vacuum

5) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency increases
 * +c) it bends away from the normal
 * -d) the frequency decreases
 * -e) it does not bend

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

7) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.73 x 10-2 cm
 * -b) 1.81 x 10-1 cm
 * -c) 5.73 x 10-1 cm
 * -d) 1.81 x 100 cm
 * +e) 5.73 x 100 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) very far away
 * -c) at infinity
 * -d) One focal length in front of the eye
 * +e) Two (of the other answers) are true

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

Key: K1
1) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

2) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) the Doppler shift
 * -e) total external refraction

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

4) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.73 x 10-2 cm
 * -b) 1.81 x 10-1 cm
 * -c) 5.73 x 10-1 cm
 * -d) 1.81 x 100 cm
 * +e) 5.73 x 100 cm

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

6) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) One focal length in front of the eye
 * +c) Two (of the other answers) are true
 * -d) at infinity
 * -e) very far away

7) When light passes from glass to air
 * -a) it does not bend
 * +b) it bends away from the normal
 * -c) the frequency decreases
 * -d) it bends towards the normal
 * -e) the frequency increases

8) The law of reflection applies to
 * -a) flat surfaces
 * -b) telescopes but not microscopes
 * -c) curved surfaces
 * -d) only light in a vacuum
 * +e) both flat and curved surfaces

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: K2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

4) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) the Doppler shift
 * -c) partial internal absorption
 * +d) total internal reflection
 * -e) the invariance of the speed of light

5) The law of reflection applies to
 * -a) curved surfaces
 * -b) telescopes but not microscopes
 * -c) flat surfaces
 * +d) both flat and curved surfaces
 * -e) only light in a vacuum

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

7) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it bends towards the normal
 * -c) it does not bend
 * +d) it bends away from the normal
 * -e) the frequency increases

8) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * +b) Two (of the other answers) are true
 * -c) very far away
 * -d) directly in front of the eye (almost touching)
 * -e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

10) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

Key: L0
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

2) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) it does not bend
 * -c) the frequency increases
 * -d) the frequency decreases
 * -e) it bends away from the normal

3) In optics, normal means
 * -a) to the right of the optical axis
 * -b) parallel to the surface
 * +c) perpendicular to the surface
 * -d) to the left of the optical axis

4) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) the invariance of the speed of light
 * -e) total external refraction

5) When light passes from glass to air
 * +a) it bends away from the normal
 * -b) it bends towards the normal
 * -c) the frequency increases
 * -d) the frequency decreases
 * -e) it does not bend

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: L1
1) When light passes from air to glass
 * -a) the frequency decreases
 * +b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency increases
 * -e) it bends away from the normal

2) In optics, normal means
 * -a) parallel to the surface
 * -b) to the left of the optical axis
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

3) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency increases

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

5) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

7) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) very far away
 * -c) at infinity
 * +d) Two (of the other answers) are true
 * -e) One focal length in front of the eye

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) partial internal absorption
 * -c) the invariance of the speed of light
 * +d) total internal reflection
 * -e) the Doppler shift

Key: L2
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

3) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * -b) One focal length in front of the eye
 * -c) at infinity
 * +d) Two (of the other answers) are true
 * -e) directly in front of the eye (almost touching)

4) In optics, normal means
 * -a) to the left of the optical axis
 * +b) perpendicular to the surface
 * -c) to the right of the optical axis
 * -d) parallel to the surface

5) When light passes from air to glass
 * -a) it bends away from the normal
 * -b) the frequency increases
 * -c) it does not bend
 * +d) it bends towards the normal
 * -e) the frequency decreases

6) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

7) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) total external refraction
 * +c) total internal reflection
 * -d) partial internal absorption
 * -e) the Doppler shift

8) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

10) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency increases
 * -c) it bends towards the normal
 * -d) the frequency decreases
 * +e) it bends away from the normal

Key: M0
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

2) The law of reflection applies to
 * -a) curved surfaces
 * -b) only light in a vacuum
 * -c) flat surfaces
 * +d) both flat and curved surfaces
 * -e) telescopes but not microscopes

3) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency decreases

4) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) rays meet whenever they are forming an image
 * -c) the center of the lens
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) rays meet whenever they pass through a lens

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

7) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

9) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * +b) Two (of the other answers) are true
 * -c) One focal length in front of the eye
 * -d) directly in front of the eye (almost touching)
 * -e) at infinity

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: M1
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

3) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they are forming an image
 * -d) rays meet if they are parallel to each other
 * -e) the center of the lens

4) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) only light in a vacuum
 * -c) telescopes but not microscopes
 * -d) flat surfaces
 * -e) curved surfaces

5) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) it does not bend
 * -c) it bends away from the normal
 * -d) the frequency decreases
 * -e) the frequency increases

6) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

8)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

9) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * -c) One focal length in front of the eye
 * -d) directly in front of the eye (almost touching)
 * +e) Two (of the other answers) are true

Key: M2
1) When light passes from air to glass
 * -a) the frequency increases
 * -b) it bends away from the normal
 * +c) it bends towards the normal
 * -d) the frequency decreases
 * -e) it does not bend

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

4) The law of reflection applies to
 * -a) curved surfaces
 * -b) only light in a vacuum
 * -c) telescopes but not microscopes
 * +d) both flat and curved surfaces
 * -e) flat surfaces

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

7) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) very far away
 * -c) directly in front of the eye (almost touching)
 * -d) at infinity
 * +e) Two (of the other answers) are true

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

9) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they pass through a lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet whenever they are forming an image
 * -e) rays meet if they are parallel to each other

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: N0
1) When light passes from glass to air
 * +a) it bends away from the normal
 * -b) it does not bend
 * -c) the frequency increases
 * -d) the frequency decreases
 * -e) it bends towards the normal

2) In optics, normal means
 * -a) to the right of the optical axis
 * -b) parallel to the surface
 * +c) perpendicular to the surface
 * -d) to the left of the optical axis

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * +d) how a nearsighted person might see a distant object

4) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * -c) rays meet whenever they are forming an image
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) the center of the lens

5) The law of reflection applies to
 * -a) telescopes but not microscopes
 * +b) both flat and curved surfaces
 * -c) curved surfaces
 * -d) only light in a vacuum
 * -e) flat surfaces

6) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

9) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

Key: N1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

2) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

3) In optics, normal means
 * +a) perpendicular to the surface
 * -b) parallel to the surface
 * -c) to the left of the optical axis
 * -d) to the right of the optical axis

4) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

5) The law of reflection applies to
 * -a) flat surfaces
 * -b) telescopes but not microscopes
 * -c) only light in a vacuum
 * -d) curved surfaces
 * +e) both flat and curved surfaces

6) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

8) When light passes from glass to air
 * -a) the frequency increases
 * +b) it bends away from the normal
 * -c) it does not bend
 * -d) the frequency decreases
 * -e) it bends towards the normal

9) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) rays meet whenever they are forming an image
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) the center of the lens
 * -e) rays meet whenever they pass through a lens

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: N2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

2) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

5) When light passes from glass to air
 * -a) the frequency decreases
 * -b) the frequency increases
 * +c) it bends away from the normal
 * -d) it does not bend
 * -e) it bends towards the normal

6) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

7) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) rays meet whenever they pass through a lens
 * -c) rays meet whenever they are forming an image
 * -d) the center of the lens
 * +e) rays meet if they were parallel to the optical axis before striking a lens

8) In optics, normal means
 * +a) perpendicular to the surface
 * -b) parallel to the surface
 * -c) to the right of the optical axis
 * -d) to the left of the optical axis

9) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

10) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) only light in a vacuum
 * -c) curved surfaces
 * -d) telescopes but not microscopes
 * -e) flat surfaces

Key: O0
1) When light passes from glass to air
 * -a) the frequency increases
 * -b) the frequency decreases
 * -c) it bends towards the normal
 * -d) it does not bend
 * +e) it bends away from the normal

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

3) In optics, normal means
 * -a) parallel to the surface
 * +b) perpendicular to the surface
 * -c) to the right of the optical axis
 * -d) to the left of the optical axis

4) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the Doppler shift
 * -d) the invariance of the speed of light
 * -e) partial internal absorption

5) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they are forming an image
 * -c) rays meet if they are parallel to each other
 * -d) rays meet whenever they pass through a lens
 * +e) rays meet if they were parallel to the optical axis before striking a lens

6) An object is placed 3.5 cm to the left of a diverging lens with a focal length of 5.6 cm. How far is the image from the lens?


 * -a) 2.15 x 10-1 cm
 * -b) 3.83 x 10-1 cm
 * -c) 6.81 x 10-1 cm
 * -d) 1.21 x 100 cm
 * +e) 2.15 x 100 cm

7) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

Key: O1
1) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

2) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

3) When light passes from glass to air
 * +a) it bends away from the normal
 * -b) it does not bend
 * -c) it bends towards the normal
 * -d) the frequency decreases
 * -e) the frequency increases

4) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the Doppler shift
 * -d) partial internal absorption
 * -e) the invariance of the speed of light

5) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

7) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

9) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) the center of the lens
 * -c) rays meet whenever they are forming an image
 * -d) rays meet if they are parallel to each other
 * +e) rays meet if they were parallel to the optical axis before striking a lens

10)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

Key: O2
1) In optics, normal means
 * -a) to the right of the optical axis
 * -b) parallel to the surface
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

2) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) total external refraction
 * +c) total internal reflection
 * -d) partial internal absorption
 * -e) the Doppler shift

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) The focal point is where
 * -a) rays meet whenever they are forming an image
 * -b) the center of the lens
 * -c) rays meet whenever they pass through a lens
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) rays meet if they are parallel to each other

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

6) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

7) When light passes from glass to air
 * -a) the frequency increases
 * +b) it bends away from the normal
 * -c) it bends towards the normal
 * -d) it does not bend
 * -e) the frequency decreases

8) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

9) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

Key: P0
1) The focal point is where
 * -a) rays meet if they are parallel to each other
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they pass through a lens
 * -d) the center of the lens
 * -e) rays meet whenever they are forming an image

2) In optics, normal means
 * +a) perpendicular to the surface
 * -b) to the right of the optical axis
 * -c) parallel to the surface
 * -d) to the left of the optical axis

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

4) When light passes from glass to air
 * -a) it does not bend
 * +b) it bends away from the normal
 * -c) the frequency decreases
 * -d) the frequency increases
 * -e) it bends towards the normal

5) When light passes from air to glass
 * -a) the frequency increases
 * -b) it does not bend
 * -c) it bends away from the normal
 * +d) it bends towards the normal
 * -e) the frequency decreases

6) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * -a) 1.03 x 101 cm
 * +b) 1.84 x 101 cm
 * -c) 3.27 x 101 cm
 * -d) 5.81 x 101 cm
 * -e) 1.03 x 102 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * +b) Two (of the other answers) are true
 * -c) at infinity
 * -d) One focal length in front of the eye
 * -e) directly in front of the eye (almost touching)

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

Key: P1
1) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

4) When light passes from air to glass
 * -a) the frequency decreases
 * -b) the frequency increases
 * -c) it bends away from the normal
 * -d) it does not bend
 * +e) it bends towards the normal

5) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

6) The focal point is where
 * -a) rays meet if they are parallel to each other
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they are forming an image
 * -d) rays meet whenever they pass through a lens
 * -e) the center of the lens

7) When light passes from glass to air
 * +a) it bends away from the normal
 * -b) it does not bend
 * -c) it bends towards the normal
 * -d) the frequency increases
 * -e) the frequency decreases

8) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * -b) One focal length in front of the eye
 * +c) Two (of the other answers) are true
 * -d) directly in front of the eye (almost touching)
 * -e) at infinity

9) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

10) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm

Key: P2
1) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

2) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * +b) Two (of the other answers) are true
 * -c) One focal length in front of the eye
 * -d) at infinity
 * -e) very far away

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) the frequency decreases
 * -c) the frequency increases
 * -d) it does not bend
 * +e) it bends away from the normal

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

7) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they pass through a lens
 * -c) rays meet whenever they are forming an image
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) rays meet if they are parallel to each other

8) When light passes from air to glass
 * -a) it bends away from the normal
 * -b) the frequency decreases
 * -c) the frequency increases
 * +d) it bends towards the normal
 * -e) it does not bend

9) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * +c) perpendicular to the surface
 * -d) to the left of the optical axis

10) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

Key: Q0
1) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) curved surfaces
 * -c) only light in a vacuum
 * -d) flat surfaces
 * +e) both flat and curved surfaces

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

3) When light passes from air to glass
 * +a) it bends towards the normal
 * -b) it bends away from the normal
 * -c) the frequency decreases
 * -d) the frequency increases
 * -e) it does not bend

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

5) The focal point is where
 * -a) rays meet whenever they are forming an image
 * -b) rays meet whenever they pass through a lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet if they are parallel to each other
 * -e) the center of the lens

6) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

8) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

9) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) very far away
 * -c) One focal length in front of the eye
 * -d) directly in front of the eye (almost touching)
 * -e) at infinity

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

Key: Q1
1) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

3) An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens?


 * -a) 1.17 x 100 cm
 * -b) 2.07 x 100 cm
 * +c) 3.69 x 100 cm
 * -d) 6.56 x 100 cm
 * -e) 1.17 x 101 cm

4) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * +c) Two (of the other answers) are true
 * -d) One focal length in front of the eye
 * -e) directly in front of the eye (almost touching)

5) An object is placed 4.35 cm to the left of a converging lens with a focal length of 5.7 cm. How far is the image from the lens?


 * -a) 1.03 x 101 cm
 * +b) 1.84 x 101 cm
 * -c) 3.27 x 101 cm
 * -d) 5.81 x 101 cm
 * -e) 1.03 x 102 cm

6) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

8) The focal point is where
 * -a) rays meet whenever they are forming an image
 * -b) rays meet if they are parallel to each other
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) the center of the lens
 * -e) rays meet whenever they pass through a lens

9) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) the frequency decreases
 * -e) it does not bend

10) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) only light in a vacuum
 * -d) flat surfaces
 * -e) telescopes but not microscopes

Key: Q2
1) When light passes from air to glass
 * -a) it bends away from the normal
 * +b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency decreases
 * -e) the frequency increases

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) rays meet whenever they are forming an image
 * -c) rays meet if they are parallel to each other
 * -d) the center of the lens
 * -e) rays meet whenever they pass through a lens

4) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

5) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

7) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

8) The law of reflection applies to
 * -a) curved surfaces
 * -b) telescopes but not microscopes
 * -c) only light in a vacuum
 * +d) both flat and curved surfaces
 * -e) flat surfaces

9) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * -b) directly in front of the eye (almost touching)
 * +c) Two (of the other answers) are true
 * -d) One focal length in front of the eye
 * -e) at infinity

Key: R0
1) When light passes from air to glass
 * -a) the frequency increases
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency decreases

2) The law of reflection applies to
 * -a) curved surfaces
 * +b) both flat and curved surfaces
 * -c) flat surfaces
 * -d) only light in a vacuum
 * -e) telescopes but not microscopes

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

5) In optics, normal means
 * -a) to the right of the optical axis
 * +b) perpendicular to the surface
 * -c) parallel to the surface
 * -d) to the left of the optical axis

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

7) An object is placed 8.4 cm to the left of a diverging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 2.01 x 100 cm
 * +b) 3.57 x 100 cm
 * -c) 6.34 x 100 cm
 * -d) 1.13 x 101 cm
 * -e) 2.01 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: R1
1) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) flat surfaces
 * +c) both flat and curved surfaces
 * -d) curved surfaces
 * -e) only light in a vacuum

2) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

3) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * +c) perpendicular to the surface
 * -d) to the left of the optical axis

4) When light passes from air to glass
 * -a) the frequency decreases
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) it does not bend
 * -e) the frequency increases

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

6) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

7) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * +c) Ray drawing eye schematic02.svg

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

10) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see an object that is too close for comfort

Key: R2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

2) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

3) When light passes from air to glass
 * -a) the frequency decreases
 * +b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency increases
 * -e) it bends away from the normal

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a nearsighted person might see a distant object

7) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

8) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

9) In optics, normal means
 * -a) parallel to the surface
 * -b) to the left of the optical axis
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

10) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) flat surfaces
 * -c) telescopes but not microscopes
 * -d) curved surfaces
 * -e) only light in a vacuum

Key: S0
1) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) the Doppler shift
 * -e) the invariance of the speed of light

2) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

3) In optics, normal means
 * -a) to the left of the optical axis
 * +b) perpendicular to the surface
 * -c) to the right of the optical axis
 * -d) parallel to the surface

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

5) When light passes from glass to air
 * -a) the frequency increases
 * +b) it bends away from the normal
 * -c) it does not bend
 * -d) the frequency decreases
 * -e) it bends towards the normal

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

8) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) at infinity

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

Key: S1
1) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

2) When light passes from glass to air
 * -a) it does not bend
 * +b) it bends away from the normal
 * -c) it bends towards the normal
 * -d) the frequency decreases
 * -e) the frequency increases

3) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

5) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

6) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

8) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) the invariance of the speed of light
 * -c) total external refraction
 * -d) the Doppler shift
 * -e) partial internal absorption

9) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) One focal length in front of the eye
 * -c) very far away
 * -d) directly in front of the eye (almost touching)
 * +e) Two (of the other answers) are true

10) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * +c) perpendicular to the surface
 * -d) to the right of the optical axis

Key: S2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * -c) to the left of the optical axis
 * +d) perpendicular to the surface

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

7) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) partial internal absorption
 * -c) the invariance of the speed of light
 * +d) total internal reflection
 * -e) total external refraction

8) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency increases
 * +e) it bends away from the normal

9) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

10) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) One focal length in front of the eye
 * -c) very far away
 * -d) at infinity
 * -e) directly in front of the eye (almost touching)

Key: T0
1) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) telescopes but not microscopes
 * -c) curved surfaces
 * -d) flat surfaces
 * +e) both flat and curved surfaces

2) In optics, normal means
 * -a) to the right of the optical axis
 * +b) perpendicular to the surface
 * -c) to the left of the optical axis
 * -d) parallel to the surface

3) When light passes from air to glass
 * -a) it does not bend
 * +b) it bends towards the normal
 * -c) it bends away from the normal
 * -d) the frequency increases
 * -e) the frequency decreases

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

5) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) the invariance of the speed of light
 * -c) partial internal absorption
 * -d) total external refraction
 * +e) total internal reflection

6) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

7) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

8) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

Key: T1
1) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * +b) total internal reflection
 * -c) partial internal absorption
 * -d) the invariance of the speed of light
 * -e) total external refraction

2) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

3) When light passes from air to glass
 * -a) the frequency decreases
 * +b) it bends towards the normal
 * -c) the frequency increases
 * -d) it does not bend
 * -e) it bends away from the normal

4) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a nearsighted person might see a distant object

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

8) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

9) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) only light in a vacuum
 * -d) telescopes but not microscopes
 * -e) flat surfaces

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: T2
1) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

2) In optics, normal means
 * -a) parallel to the surface
 * -b) to the right of the optical axis
 * +c) perpendicular to the surface
 * -d) to the left of the optical axis

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

4) When light passes from air to glass
 * -a) it does not bend
 * -b) the frequency increases
 * +c) it bends towards the normal
 * -d) it bends away from the normal
 * -e) the frequency decreases

5) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) flat surfaces
 * +c) both flat and curved surfaces
 * -d) only light in a vacuum
 * -e) curved surfaces

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

7) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

8) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

9) An important principle that allows fiber optics to work is
 * -a) the Doppler shift
 * -b) the invariance of the speed of light
 * -c) partial internal absorption
 * +d) total internal reflection
 * -e) total external refraction

10) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * -a) 2.49 x 100 cm
 * +b) 4.42 x 100 cm
 * -c) 7.86 x 100 cm
 * -d) 1.4 x 101 cm
 * -e) 2.49 x 101 cm

Key: U0
1) When light passes from glass to air
 * -a) the frequency increases
 * -b) it bends towards the normal
 * -c) it does not bend
 * -d) the frequency decreases
 * +e) it bends away from the normal

2)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

3) In optics, normal means
 * -a) to the right of the optical axis
 * -b) to the left of the optical axis
 * -c) parallel to the surface
 * +d) perpendicular to the surface

4) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the Doppler shift
 * -d) partial internal absorption
 * -e) the invariance of the speed of light

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * -b) directly in front of the eye (almost touching)
 * -c) One focal length in front of the eye
 * +d) Two (of the other answers) are true
 * -e) at infinity

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

10) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

Key: U1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

2) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray drawing eye Wrong Answer.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * +c) Ray drawing eye schematic02.svg

4) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

5) In optics, normal means
 * +a) perpendicular to the surface
 * -b) parallel to the surface
 * -c) to the left of the optical axis
 * -d) to the right of the optical axis

6) An important principle that allows fiber optics to work is
 * -a) total external refraction
 * -b) the invariance of the speed of light
 * +c) total internal reflection
 * -d) partial internal absorption
 * -e) the Doppler shift

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * +d) how a farsighted person might see an object that is too close for comfort

8) When light passes from glass to air
 * -a) it does not bend
 * -b) the frequency increases
 * +c) it bends away from the normal
 * -d) it bends towards the normal
 * -e) the frequency decreases

9) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * -c) directly in front of the eye (almost touching)
 * +d) Two (of the other answers) are true
 * -e) One focal length in front of the eye

Key: U2
1) In optics, normal means
 * -a) to the right of the optical axis
 * -b) to the left of the optical axis
 * +c) perpendicular to the surface
 * -d) parallel to the surface

2) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) the Doppler shift
 * -c) the invariance of the speed of light
 * -d) total external refraction
 * -e) partial internal absorption

3) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm

4) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * -c) the frequency increases
 * -d) the frequency decreases
 * +e) it bends away from the normal

5) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) One focal length in front of the eye
 * -c) at infinity
 * -d) very far away
 * +e) Two (of the other answers) are true

6) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

7) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * +a) 5.64 x 100 cm
 * -b) 1.78 x 101 cm
 * -c) 5.64 x 101 cm
 * -d) 1.78 x 102 cm
 * -e) 5.64 x 102 cm

8) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

9) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

10)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

Key: V0
1) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) the frequency increases
 * -e) the frequency decreases

2) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) partial internal absorption
 * +c) total internal reflection
 * -d) the Doppler shift
 * -e) total external refraction

3) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * +d) how a nearsighted person might see a distant object

4) The law of reflection applies to
 * -a) curved surfaces
 * -b) flat surfaces
 * +c) both flat and curved surfaces
 * -d) only light in a vacuum
 * -e) telescopes but not microscopes

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

7) An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.65 x 10-1 cm
 * -b) 3.18 x 10-1 cm
 * -c) 3.82 x 10-1 cm
 * -d) 4.58 x 10-1 cm
 * -e) 5.49 x 10-1 cm

8) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

9) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

10) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) at infinity
 * -c) very far away
 * -d) directly in front of the eye (almost touching)
 * +e) Two (of the other answers) are true

Key: V1
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a nearsighted person might see an object that is too close for comfort

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

3) If this represents the eye looking at an object, where is this object?
 * -a) very far away
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) at infinity
 * -e) One focal length in front of the eye

4)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

5) An object of height 0.7 cm is placed 117 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image?


 * +a) 2.62 x 10-1 cm
 * -b) 3.14 x 10-1 cm
 * -c) 3.77 x 10-1 cm
 * -d) 4.53 x 10-1 cm
 * -e) 5.43 x 10-1 cm

6) An object is placed 10.2 cm to the left of a diverging lens with a focal length of 16.6 cm. On the side, at a distance of 5.6 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 6.02 x 10-1 cm
 * -b) 1.9 x 100 cm
 * +c) 6.02 x 100 cm
 * -d) 1.9 x 101 cm
 * -e) 6.02 x 101 cm

7) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

8) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) total external refraction
 * -c) the invariance of the speed of light
 * -d) the Doppler shift
 * -e) partial internal absorption

9) When light passes from glass to air
 * -a) the frequency increases
 * -b) it does not bend
 * -c) the frequency decreases
 * +d) it bends away from the normal
 * -e) it bends towards the normal

10) The law of reflection applies to
 * -a) telescopes but not microscopes
 * -b) curved surfaces
 * +c) both flat and curved surfaces
 * -d) flat surfaces
 * -e) only light in a vacuum

Key: V2
1) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * +b) Two (of the other answers) are true
 * -c) very far away
 * -d) at infinity
 * -e) One focal length in front of the eye

2) The law of reflection applies to
 * -a) curved surfaces
 * -b) only light in a vacuum
 * -c) telescopes but not microscopes
 * -d) flat surfaces
 * +e) both flat and curved surfaces

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) partial internal absorption
 * -c) the invariance of the speed of light
 * -d) the Doppler shift
 * -e) total external refraction

5) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

6) An object of height 0.68 cm is placed 140 cm behind a diverging lens with a focal length of 87 cm. What is the height of the image?


 * -a) 1.26 x 10-1 cm
 * -b) 1.51 x 10-1 cm
 * -c) 1.81 x 10-1 cm
 * -d) 2.17 x 10-1 cm
 * +e) 2.61 x 10-1 cm

7) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * +a) 5.64 x 100 cm
 * -b) 1.78 x 101 cm
 * -c) 5.64 x 101 cm
 * -d) 1.78 x 102 cm
 * -e) 5.64 x 102 cm

8) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

9)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

10) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * -c) the frequency decreases
 * +d) it bends away from the normal
 * -e) the frequency increases

Key: W0
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

2) The focal point is where
 * +a) rays meet if they were parallel to the optical axis before striking a lens
 * -b) rays meet whenever they are forming an image
 * -c) rays meet whenever they pass through a lens
 * -d) the center of the lens
 * -e) rays meet if they are parallel to each other

3) In optics, normal means
 * +a) perpendicular to the surface
 * -b) to the right of the optical axis
 * -c) parallel to the surface
 * -d) to the left of the optical axis

4) When light passes from air to glass
 * -a) it bends away from the normal
 * -b) the frequency increases
 * -c) it does not bend
 * -d) the frequency decreases
 * +e) it bends towards the normal

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

7) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

8) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) very far away
 * +c) Two (of the other answers) are true
 * -d) directly in front of the eye (almost touching)
 * -e) at infinity

Key: W1
1) When light passes from air to glass
 * -a) the frequency increases
 * -b) the frequency decreases
 * -c) it does not bend
 * -d) it bends away from the normal
 * +e) it bends towards the normal

2) An object of height 0.64 cm is placed 112 cm behind a diverging lens with a focal length of 65 cm. What is the height of the image?


 * -a) 1.36 x 10-1 cm
 * -b) 1.63 x 10-1 cm
 * -c) 1.96 x 10-1 cm
 * +d) 2.35 x 10-1 cm
 * -e) 2.82 x 10-1 cm

3) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) In optics, normal means
 * -a) to the left of the optical axis
 * +b) perpendicular to the surface
 * -c) to the right of the optical axis
 * -d) parallel to the surface

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see a distant object

7) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

8) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * +c) Two (of the other answers) are true
 * -d) One focal length in front of the eye
 * -e) directly in front of the eye (almost touching)

9) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

10) The focal point is where
 * -a) rays meet whenever they are forming an image
 * -b) the center of the lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet whenever they pass through a lens
 * -e) rays meet if they are parallel to each other

Key: W2
1) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * +c) how a nearsighted person might see a distant object
 * -d) how a farsighted person might see an object that is too close for comfort

2) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * -b) They have the same focal lengh.
 * +c) Ray_drawing_eye_schematic.svg

3) When light passes from air to glass
 * -a) the frequency increases
 * -b) the frequency decreases
 * -c) it bends away from the normal
 * +d) it bends towards the normal
 * -e) it does not bend

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5) The focal point is where
 * -a) rays meet whenever they are forming an image
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they pass through a lens
 * -d) rays meet if they are parallel to each other
 * -e) the center of the lens

6) In optics, normal means
 * -a) to the left of the optical axis
 * -b) parallel to the surface
 * -c) to the right of the optical axis
 * +d) perpendicular to the surface

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a farsighted person might see an object that is too close for comfort
 * -c) how a farsighted person might see a distant object
 * -d) how a nearsighted person might see a distant object

8) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) very far away
 * +c) Two (of the other answers) are true
 * -d) directly in front of the eye (almost touching)
 * -e) One focal length in front of the eye

9) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 6.3 cm. How far is the image from the lens?


 * -a) 3.64 x 10-1 cm
 * -b) 6.47 x 10-1 cm
 * -c) 1.15 x 100 cm
 * -d) 2.04 x 100 cm
 * +e) 3.64 x 100 cm

10) An object of height 0.75 cm is placed 147 cm behind a diverging lens with a focal length of 86 cm. What is the height of the image?


 * +a) 2.77 x 10-1 cm
 * -b) 3.32 x 10-1 cm
 * -c) 3.99 x 10-1 cm
 * -d) 4.78 x 10-1 cm
 * -e) 5.74 x 10-1 cm

Key: X0
1) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) telescopes but not microscopes
 * -d) flat surfaces
 * -e) only light in a vacuum

2) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * -c) the center of the lens
 * -d) rays meet whenever they are forming an image
 * +e) rays meet if they were parallel to the optical axis before striking a lens

3)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see an object that is too close for comfort
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

4) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) the frequency decreases
 * -e) the frequency increases

5) When light passes from air to glass
 * -a) it does not bend
 * -b) the frequency increases
 * -c) it bends away from the normal
 * +d) it bends towards the normal
 * -e) the frequency decreases

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.4 cm. On the side, at a distance of 6.8 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.81 x 10-1 cm
 * -b) 5.71 x 10-1 cm
 * -c) 1.81 x 100 cm
 * +d) 5.71 x 100 cm
 * -e) 1.81 x 101 cm

7) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

8) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

10) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

Key: X1
1) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * +b) Ray_drawing_eye_schematic.svg
 * -c) Ray drawing eye schematic01.svg

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

3) The focal point is where
 * -a) rays meet if they are parallel to each other
 * -b) rays meet whenever they pass through a lens
 * +c) rays meet if they were parallel to the optical axis before striking a lens
 * -d) rays meet whenever they are forming an image
 * -e) the center of the lens

4) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

5) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) curved surfaces
 * -c) telescopes but not microscopes
 * -d) only light in a vacuum
 * -e) flat surfaces

6) An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * +a) 5.64 x 100 cm
 * -b) 1.78 x 101 cm
 * -c) 5.64 x 101 cm
 * -d) 1.78 x 102 cm
 * -e) 5.64 x 102 cm

7)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

8) When light passes from air to glass
 * -a) the frequency increases
 * -b) the frequency decreases
 * -c) it does not bend
 * -d) it bends away from the normal
 * +e) it bends towards the normal

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray_drawing_eye_schematic_alternate.svg
 * -c) Ray drawing eye Wrong Answer.svg

10) When light passes from glass to air
 * -a) the frequency increases
 * +b) it bends away from the normal
 * -c) the frequency decreases
 * -d) it does not bend
 * -e) it bends towards the normal

Key: X2
1)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a nearsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

2) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

3) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

4) When light passes from air to glass
 * -a) it bends away from the normal
 * +b) it bends towards the normal
 * -c) the frequency increases
 * -d) the frequency decreases
 * -e) it does not bend

5) An object is placed 4.85 cm to the left of a converging lens with a focal length of 4 cm. How far is the image from the lens?


 * -a) 4.06 x 100 cm
 * -b) 7.22 x 100 cm
 * -c) 1.28 x 101 cm
 * +d) 2.28 x 101 cm
 * -e) 4.06 x 101 cm

6) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) They have the same focal lengh.
 * -c) Ray drawing eye schematic01.svg

7) When light passes from glass to air
 * -a) the frequency increases
 * -b) the frequency decreases
 * -c) it does not bend
 * -d) it bends towards the normal
 * +e) it bends away from the normal

8) The law of reflection applies to
 * -a) curved surfaces
 * +b) both flat and curved surfaces
 * -c) telescopes but not microscopes
 * -d) flat surfaces
 * -e) only light in a vacuum

9) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.73 x 10-2 cm
 * -b) 1.81 x 10-1 cm
 * -c) 5.73 x 10-1 cm
 * -d) 1.81 x 100 cm
 * +e) 5.73 x 100 cm

10) The focal point is where
 * -a) the center of the lens
 * -b) rays meet whenever they are forming an image
 * -c) rays meet whenever they pass through a lens
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) rays meet if they are parallel to each other

Key: Y0
1) The law of reflection applies to
 * +a) both flat and curved surfaces
 * -b) flat surfaces
 * -c) only light in a vacuum
 * -d) curved surfaces
 * -e) telescopes but not microscopes

2) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) total external refraction
 * +c) total internal reflection
 * -d) partial internal absorption
 * -e) the Doppler shift

3) When light passes from air to glass
 * -a) the frequency decreases
 * -b) it bends away from the normal
 * -c) it does not bend
 * +d) it bends towards the normal
 * -e) the frequency increases

4) The focal point is where
 * -a) rays meet whenever they are forming an image
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) rays meet whenever they pass through a lens
 * -d) the center of the lens
 * -e) rays meet if they are parallel to each other

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see a distant object
 * +d) how a farsighted person might see an object that is too close for comfort

6) An object is placed 10.9 cm to the left of a diverging lens with a focal length of 16.3 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 1.88 x 100 cm
 * +b) 5.94 x 100 cm
 * -c) 1.88 x 101 cm
 * -d) 5.94 x 101 cm
 * -e) 1.88 x 102 cm

7) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

8) If this represents the eye looking at an object, where is this object?
 * +a) Two (of the other answers) are true
 * -b) at infinity
 * -c) One focal length in front of the eye
 * -d) very far away
 * -e) directly in front of the eye (almost touching)

9) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

10) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

Key: Y1
1) An object is placed 13.7 cm to the left of a diverging lens with a focal length of 17.7 cm. On the side, at a distance of 5.5 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.73 x 10-2 cm
 * -b) 1.81 x 10-1 cm
 * -c) 5.73 x 10-1 cm
 * -d) 1.81 x 100 cm
 * +e) 5.73 x 100 cm

2) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * -b) the Doppler shift
 * -c) total external refraction
 * +d) total internal reflection
 * -e) the invariance of the speed of light

3) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

4) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

5) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

6)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a farsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a nearsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see a distant object

7) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) very far away
 * -c) One focal length in front of the eye
 * -d) at infinity
 * +e) Two (of the other answers) are true

8) The law of reflection applies to
 * -a) telescopes but not microscopes
 * +b) both flat and curved surfaces
 * -c) curved surfaces
 * -d) only light in a vacuum
 * -e) flat surfaces

9) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * -b) rays meet if they are parallel to each other
 * -c) rays meet whenever they are forming an image
 * +d) rays meet if they were parallel to the optical axis before striking a lens
 * -e) the center of the lens

10) When light passes from air to glass
 * -a) it does not bend
 * -b) the frequency decreases
 * -c) the frequency increases
 * -d) it bends away from the normal
 * +e) it bends towards the normal

Key: Y2
1) An object is placed 4.65 cm to the left of a converging lens with a focal length of 6.2 cm. How far is the image from the lens?


 * -a) 1.86 x 100 cm
 * -b) 3.31 x 100 cm
 * -c) 5.88 x 100 cm
 * -d) 1.05 x 101 cm
 * +e) 1.86 x 101 cm

2) The focal point is where
 * -a) rays meet whenever they pass through a lens
 * +b) rays meet if they were parallel to the optical axis before striking a lens
 * -c) the center of the lens
 * -d) rays meet if they are parallel to each other
 * -e) rays meet whenever they are forming an image

3) An important principle that allows fiber optics to work is
 * +a) total internal reflection
 * -b) partial internal absorption
 * -c) the Doppler shift
 * -d) total external refraction
 * -e) the invariance of the speed of light

4) After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.
 * -a) true
 * +b) false

5)  Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a farsighted person might see a distant object
 * -b) how a nearsighted person might see a distant object
 * +c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

6) Which lens has the shorter focal length?
 * -a) Ray drawing eye schematic01.svg
 * +b) Ray_drawing_eye_schematic.svg
 * -c) They have the same focal lengh.

7) When light passes from air to glass
 * -a) it bends away from the normal
 * -b) the frequency decreases
 * +c) it bends towards the normal
 * -d) the frequency increases
 * -e) it does not bend

8) The law of reflection applies to
 * -a) only light in a vacuum
 * -b) curved surfaces
 * +c) both flat and curved surfaces
 * -d) telescopes but not microscopes
 * -e) flat surfaces

9) An object is placed 10.8 cm to the left of a diverging lens with a focal length of 15.6 cm. On the side, at a distance of 5.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm.  How far is the final image from the converging lens?


 * -a) 5.98 x 10-1 cm
 * -b) 1.89 x 100 cm
 * +c) 5.98 x 100 cm
 * -d) 1.89 x 101 cm
 * -e) 5.98 x 101 cm

10) If this represents the eye looking at an object, where is this object?
 * -a) directly in front of the eye (almost touching)
 * -b) at infinity
 * -c) One focal length in front of the eye
 * +d) Two (of the other answers) are true
 * -e) very far away

Key: Z0
1) When light passes from air to glass
 * -a) the frequency decreases
 * -b) the frequency increases
 * -c) it bends away from the normal
 * -d) it does not bend
 * +e) it bends towards the normal

2) When light passes from glass to air
 * -a) it bends towards the normal
 * -b) it does not bend
 * -c) the frequency increases
 * -d) the frequency decreases
 * +e) it bends away from the normal

3) An important principle that allows fiber optics to work is
 * -a) the invariance of the speed of light
 * -b) partial internal absorption
 * -c) the Doppler shift
 * -d) total external refraction
 * +e) total internal reflection

4) The law of reflection applies to
 * -a) curved surfaces
 * -b) flat surfaces
 * -c) telescopes but not microscopes
 * +d) both flat and curved surfaces
 * -e) only light in a vacuum

5) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * +b) how a nearsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a farsighted person might see a distant object

6) An object is placed 8.6 cm to the left of a diverging lens with a focal length of 9.1 cm. How far is the image from the lens?


 * -a) 2.49 x 100 cm
 * +b) 4.42 x 100 cm
 * -c) 7.86 x 100 cm
 * -d) 1.4 x 101 cm
 * -e) 2.49 x 101 cm

7) An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens?


 * -a) 4.18 x 100 cm
 * +b) 7.43 x 100 cm
 * -c) 1.32 x 101 cm
 * -d) 2.35 x 101 cm
 * -e) 4.18 x 101 cm

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

9) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

10) If this represents the eye looking at an object, where is this object?
 * -a) One focal length in front of the eye
 * -b) at infinity
 * -c) very far away
 * +d) Two (of the other answers) are true
 * -e) directly in front of the eye (almost touching)

Key: Z1
1) When light passes from glass to air
 * -a) it does not bend
 * -b) it bends towards the normal
 * +c) it bends away from the normal
 * -d) the frequency decreases
 * -e) the frequency increases

2) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm

3) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * -a) how a nearsighted person might see an object that is too close for comfort
 * -b) how a farsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * +d) how a nearsighted person might see a distant object

5) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * -b) the invariance of the speed of light
 * +c) total internal reflection
 * -d) total external refraction
 * -e) the Doppler shift

6) Which lens has the shorter focal length?
 * +a) Ray_drawing_eye_schematic.svg
 * -b) Ray drawing eye schematic01.svg
 * -c) They have the same focal lengh.

7) When light passes from air to glass
 * -a) it does not bend
 * -b) it bends away from the normal
 * +c) it bends towards the normal
 * -d) the frequency decreases
 * -e) the frequency increases

8) The law of reflection applies to
 * -a) only light in a vacuum
 * +b) both flat and curved surfaces
 * -c) curved surfaces
 * -d) flat surfaces
 * -e) telescopes but not microscopes

9) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * -a) Ray_drawing_eye_schematic_alternate.svg
 * +b) Ray drawing eye schematic02.svg
 * -c) Ray drawing eye Wrong Answer.svg

10) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * -b) One focal length in front of the eye
 * -c) very far away
 * +d) Two (of the other answers) are true
 * -e) directly in front of the eye (almost touching)

Key: Z2
1) When light passes from glass to air
 * -a) the frequency decreases
 * -b) it does not bend
 * -c) the frequency increases
 * +d) it bends away from the normal
 * -e) it bends towards the normal

2) Which lens has the shorter focal length?
 * -a) They have the same focal lengh.
 * -b) Ray drawing eye schematic01.svg
 * +c) Ray_drawing_eye_schematic.svg

3) The law of reflection applies to
 * -a) flat surfaces
 * -b) telescopes but not microscopes
 * -c) curved surfaces
 * -d) only light in a vacuum
 * +e) both flat and curved surfaces

4) Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
 * +a) how a nearsighted person might see a distant object
 * -b) how a farsighted person might see a distant object
 * -c) how a farsighted person might see an object that is too close for comfort
 * -d) how a nearsighted person might see an object that is too close for comfort

5) An object is placed 7.8 cm to the left of a diverging lens with a focal length of 3.6 cm. How far is the image from the lens?


 * -a) 7.79 x 10-1 cm
 * -b) 1.39 x 100 cm
 * +c) 2.46 x 100 cm
 * -d) 4.38 x 100 cm
 * -e) 7.79 x 100 cm

6) When light passes from air to glass
 * -a) the frequency increases
 * -b) it does not bend
 * +c) it bends towards the normal
 * -d) the frequency decreases
 * -e) it bends away from the normal

7) An important principle that allows fiber optics to work is
 * -a) partial internal absorption
 * -b) the invariance of the speed of light
 * +c) total internal reflection
 * -d) the Doppler shift
 * -e) total external refraction

8) Mr. Smith is gazing at something as shown in the figure to the left.  Suppose he does not refocus, but attempts to stare at the star shown in the figures below.  Which diagram depicts how the rays from the star would travel if he does not refocus?
 * +a) Ray drawing eye schematic02.svg
 * -b) Ray drawing eye Wrong Answer.svg
 * -c) Ray_drawing_eye_schematic_alternate.svg

9) If this represents the eye looking at an object, where is this object?
 * -a) at infinity
 * +b) Two (of the other answers) are true
 * -c) directly in front of the eye (almost touching)
 * -d) very far away
 * -e) One focal length in front of the eye

10) An object is placed 3.15 cm to the left of a converging lens with a focal length of 6.7 cm. How far is the image from the lens?


 * -a) 3.34 x 100 cm
 * +b) 5.95 x 100 cm
 * -c) 1.06 x 101 cm
 * -d) 1.88 x 101 cm
 * -e) 3.34 x 101 cm