Question 1

It is difficult to see the roadway when driving on a rainy night mainly because

Accepted Answer

A) light scatters from raindrops and reduces the amount of light reaching your eyes. 
B) of additional condensation on the inner surface of the windshield. 
C) the film of water on your windshield provides an additional reflecting surface. 
D) the film of water on the roadway makes the road less diffuse. 
E) none of the above 
A) light scatters from raindrops and reduces the amount of light reaching your eyes. 
B) of additional condensation on the inner surface of the windshield. 
C) the film of water on your windshield provides an additional reflecting surface. 
D) the film of water on the roadway makes the road less diffuse. 
E) none of the above

Question 2

Your image in a plane mirror is

Accepted Answer

A) virtual. 
B) real. 
C) both of these 
D) neither of these 
A) virtual. 
B) real. 
C) both of these 
D) neither of these

Question 3

A single raindrop illuminated by sunshine disperses

Accepted Answer

A) a single color. 
B) mainly light of mid-frequency colors. 
C) all the colors of the rainbow. 
A) a single color. 
B) mainly light of mid-frequency colors. 
C) all the colors of the rainbow.

Question 4

Ninety percent of light incident on a certain piece of glass passes through it. How much light passes through two pieces of this glass?

Accepted Answer

A) 80% 
B) 81% 
C) 85% 
D) 89% 
E) 90% 
A) 80% 
B) 81% 
C) 85% 
D) 89% 
E) 90%

Question 5

To see his full height, Blinky Bill who is 1 meter tall needs a mirror that is at least

Accepted Answer

A) 0.33 m tall. 
B) 0.50 m tall. 
C) 0.75 m tall. 
D) 1 m tall. 
E) depends on distance from the mirror. 
A) 0.33 m tall. 
B) 0.50 m tall. 
C) 0.75 m tall. 
D) 1 m tall. 
E) depends on distance from the mirror.

Question 6

To "spear" a blue fish with a red laser beam and compensate for refraction, aim your laser

Accepted Answer

A) directly at the sighted fish. 
B) above the sighted fish. 
C) below the sighted fish. 
A) directly at the sighted fish. 
B) above the sighted fish. 
C) below the sighted fish.

Question 7

If a fish looks upward at 45° to a pond's water's surface, it will see

Accepted Answer

A) the pond's bottom. 
B) the sky and possibly some tall surroundings. 
C) only the water's surface. 
D) none of the above 
A) the pond's bottom. 
B) the sky and possibly some tall surroundings. 
C) only the water's surface. 
D) none of the above

Question 8

According to the law of reflection, the incident light ray, the reflected light ray, and the normal between them

Accepted Answer

A) lie in the same plane. 
B) may or may not lie in the same plane. 
C) lie in planes that are perpendicular to one another. 
A) lie in the same plane. 
B) may or may not lie in the same plane. 
C) lie in planes that are perpendicular to one another.

Question 9

Chromatic aberration is absent in

Accepted Answer

A) converging lenses 
B) diverging lenses. 
C) front surface plane mirrors. 
A) converging lenses 
B) diverging lenses. 
C) front surface plane mirrors.

Question 10

Light travels slower in a lens having a

Accepted Answer

A) high index of refraction. 
B) low index of refraction. 
C) same in each 
A) high index of refraction. 
B) low index of refraction. 
C) same in each

Question 11

Refraction occurs when light passing from one medium to another

Accepted Answer

A) changes frequency. 
B) changes speed. 
C) loses energy. 
D) reflects inward. 
A) changes frequency. 
B) changes speed. 
C) loses energy. 
D) reflects inward.

Question 12

The inversion of your image in a plane mirror is actually an inversion of

Accepted Answer

A) left-right. 
B) up-down. 
C) front-back. 
D) all of the above 
A) left-right. 
B) up-down. 
C) front-back. 
D) all of the above

Question 13

A yellow candle flame reflects from opposite surfaces of a piece of red glass.

Accepted Answer

A) both images are yellow 
B) one image is yellow and the other red 
C) both images are red 
D) both images are reddish yellow 
A) both images are yellow 
B) one image is yellow and the other red 
C) both images are red 
D) both images are reddish yellow

Question 14

The refraction of light in a diamond is greater for

Accepted Answer

A) long-wavelength light. 
B) short-wavelength light. 
C) both refract the same 
A) long-wavelength light. 
B) short-wavelength light. 
C) both refract the same

Question 15

If you walk towards a mirror at a certain speed, the relative speed between you and your image is

Accepted Answer

A) half your speed. 
B) your speed. 
C) twice your speed. 
D) none of the above 
A) half your speed. 
B) your speed. 
C) twice your speed. 
D) none of the above

Question 16

When a colored light in air shines on water and is refracted, its frequency

Accepted Answer

A) decreases. 
B) remains unchanged. 
C) increases. 
A) decreases. 
B) remains unchanged. 
C) increases.

Question 17

The Sun's elliptical shape at sunset can be adequately explained by

Accepted Answer

A) Fermat's principle. 
B) the law of refraction. 
C) both of these 
D) neither of these 
A) Fermat's principle. 
B) the law of refraction. 
C) both of these 
D) neither of these

Question 18

Which of the following can be projected onto a viewing screen?

Accepted Answer

A) a real image 
B) a virtual image 
C) both of these 
D) neither of these 
A) a real image 
B) a virtual image 
C) both of these 
D) neither of these

Question 19

In a converging lens, objects infinitely far away are focused

Accepted Answer

A) in front of the focal point. 
B) at the focal point. 
C) beyond the focal point. 
A) in front of the focal point. 
B) at the focal point. 
C) beyond the focal point.

Question 20

Light is reflected when

Accepted Answer

A) electron clouds of atoms are energized. 
B) atomic nuclei are made to vibrate. 
C) incident light is returned into the medium from which it came. 
D) electromagnetic waves emanate from matter. 
A) electron clouds of atoms are energized. 
B) atomic nuclei are made to vibrate. 
C) incident light is returned into the medium from which it came. 
D) electromagnetic waves emanate from matter.

Exam 28: Reflection and Refraction

It is difficult to see the roadway when driving on a rainy night mainly because

Your image in a plane mirror is

A single raindrop illuminated by sunshine disperses

Ninety percent of light incident on a certain piece of glass passes through it. How much light passes through two pieces of this glass?

To see his full height, Blinky Bill who is 1 meter tall needs a mirror that is at least

To "spear" a blue fish with a red laser beam and compensate for refraction, aim your laser

If a fish looks upward at 45° to a pond's water's surface, it will see

According to the law of reflection, the incident light ray, the reflected light ray, and the normal between them

Chromatic aberration is absent in

Light travels slower in a lens having a

Refraction occurs when light passing from one medium to another

The inversion of your image in a plane mirror is actually an inversion of

A yellow candle flame reflects from opposite surfaces of a piece of red glass.

The refraction of light in a diamond is greater for

If you walk towards a mirror at a certain speed, the relative speed between you and your image is

When a colored light in air shines on water and is refracted, its frequency

The Sun's elliptical shape at sunset can be adequately explained by

Which of the following can be projected onto a viewing screen?

In a converging lens, objects infinitely far away are focused

Light is reflected when

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