Question 1

Light refracts when traveling from air into glass because of a change in light's

Accepted Answer

A) intensity. 
B) frequency. 
C) speed. 
D) all of the above 
E) none of the above 
A) intensity. 
B) frequency. 
C) speed. 
D) all of the above 
E) none of the above

Question 2

When sunlight illuminates a page from your Conceptual Physics book it

Accepted Answer

A) reflects most of it. 
B) absorbs at the text lettering. 
C) both of these 
D) neither of these 
A) reflects most of it. 
B) absorbs at the text lettering. 
C) both of these 
D) neither of these

Question 3

You photograph the image of your little sister, who stands 2 meters in front of a plane mirror. Holding the camera beside her head, the distance to her image is

Accepted Answer

A) 1 meter. 
B) 2 meters. 
C) 3 meters. 
D) 4 meters. 
E) none of the above 
A) 1 meter. 
B) 2 meters. 
C) 3 meters. 
D) 4 meters. 
E) none of the above

Question 4

Your vision is sharpest when your pupil is

Accepted Answer

A) dilated. 
B) constricted. 
C) same either way 
A) dilated. 
B) constricted. 
C) same either way

Question 5

When sunlight from air enters water, light that refracts most is

Accepted Answer

A) red. 
B) orange. 
C) green. 
D) violet. 
E) all refract the same amount 
A) red. 
B) orange. 
C) green. 
D) violet. 
E) all refract the same amount

Question 6

A fish above the surface of water will see better in air if it has goggles that are

Accepted Answer

A) tinted blue. 
B) hemispherical. 
C) filled with water. 
D) extremely shiny. 
E) none of the above 
A) tinted blue. 
B) hemispherical. 
C) filled with water. 
D) extremely shiny. 
E) none of the above

Question 7

Standing at the shore of a still lake, the reflected view of scenery on the other side of the lake is the view you would see if you were upside down with your eye in the line of sight

Accepted Answer

A) where it already is. 
B) at the surface of the water where the light reflects. 
C) directly beneath you, as far below water level as you are above. 
D) close to the distant shore. 
E) none of the above 
A) where it already is. 
B) at the surface of the water where the light reflects. 
C) directly beneath you, as far below water level as you are above. 
D) close to the distant shore. 
E) none of the above

Question 8

When a light ray in air enters water at 15° from the normal, it

Accepted Answer

A) always bends toward the normal. 
B) always bends away from the normal. 
C) sometimes bends towards or away from the normal. 
D) does not bend. 
A) always bends toward the normal. 
B) always bends away from the normal. 
C) sometimes bends towards or away from the normal. 
D) does not bend.

Question 9

Which is a useful property of a prism?

Accepted Answer

A) internally reflects 100% of incident light 
B) changes directions of light in a variety of ways 
C) re-inverts images 
D) all the above 
E) none of the above 
A) internally reflects 100% of incident light 
B) changes directions of light in a variety of ways 
C) re-inverts images 
D) all the above 
E) none of the above

Question 10

If you look at yourself in a pocket mirror, then hold the mirror farther away, you see

Accepted Answer

A) more of yourself. 
B) less of yourself. 
C) the same amount of yourself. 
A) more of yourself. 
B) less of yourself. 
C) the same amount of yourself.

Question 11

A mirage occurs when light travels faster

Accepted Answer

A) near the ground than higher up. 
B) in less dense air than more dense air higher up. 
C) both of these 
D) neither of these 
A) near the ground than higher up. 
B) in less dense air than more dense air higher up. 
C) both of these 
D) neither of these

Question 12

If you cover half a camera lens with opaque tape, the images produced will be

Accepted Answer

A) cut in half. 
B) only dimmer. 
C) both of these 
D) neither of these 
A) cut in half. 
B) only dimmer. 
C) both of these 
D) neither of these

Question 13

When a light beam emerges from water into air, light speed

Accepted Answer

A) increases. 
B) decreases. 
C) remains the same. 
A) increases. 
B) decreases. 
C) remains the same.

Question 14

When light is refracted, there is a change in its

Accepted Answer

A) frequency. 
B) wavelength. 
C) both of these 
D) neither of these 
A) frequency. 
B) wavelength. 
C) both of these 
D) neither of these

Question 15

Which are consequences of different speeds of light in different media?

Accepted Answer

A) mirages 
B) rainbows 
C) brilliant colors of diamonds 
D) all of the above 
E) none of the above 
A) mirages 
B) rainbows 
C) brilliant colors of diamonds 
D) all of the above 
E) none of the above

Question 16

Refraction results from differences in light's

Accepted Answer

A) frequency. 
B) incident angles. 
C) speed. 
D) all of the above 
E) none of the above 
A) frequency. 
B) incident angles. 
C) speed. 
D) all of the above 
E) none of the above

Question 17

Chromatic aberration is a consequence of different colors in a lens having different

Accepted Answer

A) aberrations. 
B) frequencies. 
C) energies. 
D) critical angles. 
E) speeds. 
A) aberrations. 
B) frequencies. 
C) energies. 
D) critical angles. 
E) speeds.

Question 18

Object and image for a plane mirror occur

Accepted Answer

A) along the same plane. 
B) equal distances from the mirror. 
C) at right angles to each other. 
D) all of the above 
E) none of the above 
A) along the same plane. 
B) equal distances from the mirror. 
C) at right angles to each other. 
D) all of the above 
E) none of the above

Question 19

A primary rainbow is brighter than a secondary rainbow because

Accepted Answer

A) sunlight reaching it is more intense. 
B) there is one less reflection inside the water drops. 
C) larger drops produce primary rainbows. 
D) the secondary bow is a dim reflection of the primary rainbow. 
E) none of the above 
A) sunlight reaching it is more intense. 
B) there is one less reflection inside the water drops. 
C) larger drops produce primary rainbows. 
D) the secondary bow is a dim reflection of the primary rainbow. 
E) none of the above

Question 20

The index of refraction for crown glass, common in eyeglasses, is 1.52. The index of refraction of a particular plastic lens is 1.76. Light bends more in the

Accepted Answer

A) crown glass. 
B) plastic lens. 
C) same speed in each. 
D) need more information 
A) crown glass. 
B) plastic lens. 
C) same speed in each. 
D) need more information

Exam 28: Reflection and Refraction

Light refracts when traveling from air into glass because of a change in light's

When sunlight illuminates a page from your Conceptual Physics book it

You photograph the image of your little sister, who stands 2 meters in front of a plane mirror. Holding the camera beside her head, the distance to her image is

Your vision is sharpest when your pupil is

When sunlight from air enters water, light that refracts most is

A fish above the surface of water will see better in air if it has goggles that are

Standing at the shore of a still lake, the reflected view of scenery on the other side of the lake is the view you would see if you were upside down with your eye in the line of sight

When a light ray in air enters water at 15° from the normal, it

Which is a useful property of a prism?

If you look at yourself in a pocket mirror, then hold the mirror farther away, you see

A mirage occurs when light travels faster

If you cover half a camera lens with opaque tape, the images produced will be

When a light beam emerges from water into air, light speed

When light is refracted, there is a change in its

Which are consequences of different speeds of light in different media?

Refraction results from differences in light's

Chromatic aberration is a consequence of different colors in a lens having different

Object and image for a plane mirror occur

A primary rainbow is brighter than a secondary rainbow because

The index of refraction for crown glass, common in eyeglasses, is 1.52. The index of refraction of a particular plastic lens is 1.76. Light bends more in the

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