Question 1

Rainbows exist because light is

Accepted Answer

A) reflected. 
B) refracted. 
C) both of these 
D) neither of these 
A) reflected. 
B) refracted. 
C) both of these 
D) neither of these

Question 2

When taking a photo of a nearby flower, your camera lens should be set

Accepted Answer

A) closer than one focal length from the photosensitive surface. 
B) farther than one focal length from the photosensitive surface. 
C) to one focal length from the photosensitive surface. 
A) closer than one focal length from the photosensitive surface. 
B) farther than one focal length from the photosensitive surface. 
C) to one focal length from the photosensitive surface.

Question 3

Rainbows are not usually seen as complete circles because

Accepted Answer

A) the ground is usually in the way. 
B) they are actually elliptical. 
C) they have no bottom part. 
D) rain drops are not perfectly round. 
E) rainbows are actually arched shaped. 
A) the ground is usually in the way. 
B) they are actually elliptical. 
C) they have no bottom part. 
D) rain drops are not perfectly round. 
E) rainbows are actually arched shaped.

Question 4

Magnification is greater with 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 5

In which material does light travel fastest?

Accepted Answer

A) glass 
B) water 
C) plastic 
D) air 
E) same for all 
A) glass 
B) water 
C) plastic 
D) air 
E) same for all

Question 6

When a rainbow is seen as a complete circle from an airplane, the airplane's shadow is

Accepted Answer

A) in the center of the rainbow. 
B) in the lower part of the rainbow. 
C) in the upper part of the rainbow. 
D) totally outside the rainbow. 
E) nowhere, for there is no shadow. 
A) in the center of the rainbow. 
B) in the lower part of the rainbow. 
C) in the upper part of the rainbow. 
D) totally outside the rainbow. 
E) nowhere, for there is no shadow.

Question 7

To send a beam laser-light beam to a space station just above the atmosphere near the horizon, aim your laser

Accepted Answer

A) above your line of sight. 
B) below your line of sight. 
C) along your line of sight. 
A) above your line of sight. 
B) below your line of sight. 
C) along your line of sight.

Question 8

A mirage is a result of atmospheric

Accepted Answer

A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations. 
A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations.

Question 9

To "spear" a red 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 10

The twinkling of the stars is a result of atmospheric

Accepted Answer

A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations. 
A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations.

Question 11

The secondary rainbow is dimmer than the primary rainbow mainly because

Accepted Answer

A) its colors are inverted. 
B) it is larger, and its energy is spread over more area. 
C) it is farther from the viewer. 
D) it simply has less energy than the primary bow. 
E) of an extra reflection and refraction in the drops. 
A) its colors are inverted. 
B) it is larger, and its energy is spread over more area. 
C) it is farther from the viewer. 
D) it simply has less energy than the primary bow. 
E) of an extra reflection and refraction in the drops.

Question 12

Magnification by a lens would be greater if light

Accepted Answer

A) propagated instantaneously. 
B) traveled faster in glass than it does. 
C) traveled slower in glass than it does. 
D) beams spread less. 
E) none of the above 
A) propagated instantaneously. 
B) traveled faster in glass than it does. 
C) traveled slower in glass than it does. 
D) beams spread less. 
E) none of the above

Question 13

In looking at yourself in a steamy mirror you wipe just enough moisture away to barely see a full view of your face. If you move back from the mirror you'll see

Accepted Answer

A) a bit more of your face. 
B) a bit less of your face. 
C) the same amount of your face. 
A) a bit more of your face. 
B) a bit less of your face. 
C) the same amount of your face.

Question 14

Light of different colors in a glass prism travel at

Accepted Answer

A) different speeds. 
B) the same speed. 
C) the same speed in prisms and all materials. 
A) different speeds. 
B) the same speed. 
C) the same speed in prisms and all materials.

Question 15

When a light ray passes at a non-90° angle from water into air, it

Accepted Answer

A) bends toward the normal. 
B) bends away from the normal. 
C) travels much slower. 
A) bends toward the normal. 
B) bends away from the normal. 
C) travels much slower.

Question 16

The type of lens that spreads parallel light is a

Accepted Answer

A) converging lens. 
B) diverging lens. 
C) combination of converging-diverging lens. 
A) converging lens. 
B) diverging lens. 
C) combination of converging-diverging lens.

Question 17

A mirage occurs for road surfaces that are most often

Accepted Answer

A) hot. 
B) cold. 
C) wet. 
D) hard. 
E) snowy. 
A) hot. 
B) cold. 
C) wet. 
D) hard. 
E) snowy.

Question 18

When light passes through common windowpane, its angle of emergence is

Accepted Answer

A) usually less than its angle of incidence. 
B) always less than its angle of incidence. 
C) the same as its angle of incidence. 
D) usually more than its angle of incidence. 
E) always more than its angle of incidence. 
A) usually less than its angle of incidence. 
B) always less than its angle of incidence. 
C) the same as its angle of incidence. 
D) usually more than its angle of incidence. 
E) always more than its angle of incidence.

Question 19

The average speed of light is greatest in

Accepted Answer

A) red glass. 
B) orange glass. 
C) green glass. 
D) blue glass. 
E) same in all of these 
A) red glass. 
B) orange glass. 
C) green glass. 
D) blue glass. 
E) same in all of these

Question 20

Diffuse reflection occurs when the size of surface irregularities is

Accepted Answer

A) small compared to the wavelength of the light used. 
B) large compared to the wavelength of the light used. 
C) microscopic. 
A) small compared to the wavelength of the light used. 
B) large compared to the wavelength of the light used. 
C) microscopic.

Exam 28: Reflection and Refraction

Rainbows exist because light is

When taking a photo of a nearby flower, your camera lens should be set

Rainbows are not usually seen as complete circles because

Magnification is greater with a lens having a

In which material does light travel fastest?

When a rainbow is seen as a complete circle from an airplane, the airplane's shadow is

To send a beam laser-light beam to a space station just above the atmosphere near the horizon, aim your laser

A mirage is a result of atmospheric

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

The twinkling of the stars is a result of atmospheric

The secondary rainbow is dimmer than the primary rainbow mainly because

Magnification by a lens would be greater if light

In looking at yourself in a steamy mirror you wipe just enough moisture away to barely see a full view of your face. If you move back from the mirror you'll see

Light of different colors in a glass prism travel at

When a light ray passes at a non-90° angle from water into air, it

The type of lens that spreads parallel light is a

A mirage occurs for road surfaces that are most often

When light passes through common windowpane, its angle of emergence is

The average speed of light is greatest in

Diffuse reflection occurs when the size of surface irregularities is

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