Question 1

When ultraviolet light is incident upon glass,atoms in the glass

Accepted Answer

A) are forced into vibration. 
B) resonate. 
C) pass the light energy along practically undiminished. 
D) freely absorb and re-emit most of the ultraviolet light. 
A) are forced into vibration. 
B) resonate. 
C) pass the light energy along practically undiminished. 
D) freely absorb and re-emit most of the ultraviolet light.

Question 2

A pair of sunglasses and a pair of clear reading glasses are left in the sunlight.The hotter glasses would be the

Accepted Answer

A) sunglasses. 
B) reading glasses. 
C) both 
D) neither 
A) sunglasses. 
B) reading glasses. 
C) both 
D) neither

Question 3

Red-hot and blue-hot stars appear white to the eye because

Accepted Answer

A) the eye has difficulty seeing color at night. 
B) they are too dim to fire the cones. 
C) they are too dim to fire the rods. 
D) they are overwhelmed by the blackness of the nighttime sky. 
E) eye receptivity peaks in the yellow-green part of the spectrum. 
A) the eye has difficulty seeing color at night. 
B) they are too dim to fire the cones. 
C) they are too dim to fire the rods. 
D) they are overwhelmed by the blackness of the nighttime sky. 
E) eye receptivity peaks in the yellow-green part of the spectrum.

Question 4

The natural frequency of the atoms in glass is in the

Accepted Answer

A) infrared part of the spectrum. 
B) visible part of the spectrum. 
C) ultraviolet part of the spectrum. 
A) infrared part of the spectrum. 
B) visible part of the spectrum. 
C) ultraviolet part of the spectrum.

Question 5

At the same time an astronaut on the moon sees a solar eclipse,observers on Earth see

Accepted Answer

A) a lunar eclipse. 
B) a solar eclipse. 
C) no eclipse at all. 
A) a lunar eclipse. 
B) a solar eclipse. 
C) no eclipse at all.

Question 6

The speed of light in the void between molecules in glass is

Accepted Answer

A) more than its speed in a vacuum. 
B) the same as its speed in a vacuum. 
C) less than its speed in a vacuum. 
A) more than its speed in a vacuum. 
B) the same as its speed in a vacuum. 
C) less than its speed in a vacuum.

Question 7

A solar eclipse occurs when the

Accepted Answer

A) sun passes into Earth's shadow. 
B) moon passes into the Earth's shadow. 
C) the moon's shadow touches Earth. 
A) sun passes into Earth's shadow. 
B) moon passes into the Earth's shadow. 
C) the moon's shadow touches Earth.

Question 8

Compared to its average speed in air,the average speed of a beam of light in glass is

Accepted Answer

A) more. 
B) less. 
C) the same. 
A) more. 
B) less. 
C) the same.

Question 9

The sensation of color is seen when light falls on the eye's

Accepted Answer

A) rods. 
B) cones. 
C) both 
D) neither 
A) rods. 
B) cones. 
C) both 
D) neither

Question 10

A partial solar eclipse occurs for people in the sun's

Accepted Answer

A) umbra. 
B) penumbra. 
C) none of these 
A) umbra. 
B) penumbra. 
C) none of these

Question 11

If an electric charge is shaken up and down

Accepted Answer

A) sound is emitted. 
B) light is emitted. 
C) electron excitation occurs. 
D) a magnetic field is created. 
E) its mass decreases. 
A) sound is emitted. 
B) light is emitted. 
C) electron excitation occurs. 
D) a magnetic field is created. 
E) its mass decreases.

Question 12

Consider light energy that is momentarily absorbed in glass and then re-emitted.Compared to the absorbed light,the frequency of the re-emitted light is

Accepted Answer

A) considerably less. 
B) slightly less. 
C) the same. 
D) slightly more. 
E) considerably more. 
A) considerably less. 
B) slightly less. 
C) the same. 
D) slightly more. 
E) considerably more.

Question 13

Things seen by moonlight usually aren't colored because moonlight

Accepted Answer

A) doesn't have very many colors in it. 
B) is too dim to activate the retina's cones. 
C) photons don't have enough energy to activate the retina's cones. 
D) all of these 
E) none of these 
A) doesn't have very many colors in it. 
B) is too dim to activate the retina's cones. 
C) photons don't have enough energy to activate the retina's cones. 
D) all of these 
E) none of these

Question 14

In the periphery of our vision,we are

Accepted Answer

A) more sensitive to low frequencies than high ones. 
B) insensitive to color and movement. 
C) sensitive to movement,but cannot see color. 
D) sensitive to both movement and color. 
E) none of these 
A) more sensitive to low frequencies than high ones. 
B) insensitive to color and movement. 
C) sensitive to movement,but cannot see color. 
D) sensitive to both movement and color. 
E) none of these

Question 15

The main difference between a radio wave and a sound wave is their different

Accepted Answer

A) frequencies. 
B) wavelengths. 
C) energies. 
D) amplitudes. 
E) modes of travel. 
A) frequencies. 
B) wavelengths. 
C) energies. 
D) amplitudes. 
E) modes of travel.

Question 16

Compared to radio waves,the velocity of visible light waves in a vacuum is

Accepted Answer

A) less. 
B) more. 
C) the same. 
A) less. 
B) more. 
C) the same.

Question 17

Information-carrying nerves are connected to the retina at

Accepted Answer

A) the fovea. 
B) the blind spot. 
C) the cornea. 
D) the iris. 
E) the periphery. 
A) the fovea. 
B) the blind spot. 
C) the cornea. 
D) the iris. 
E) the periphery.

Question 18

The Earth's atmosphere is transparent to most waves in the

Accepted Answer

A) infrared part of the spectrum. 
B) visible part of the spectrum. 
C) ultraviolet part of the spectrum. 
D) entire electromagnetic spectrum. 
A) infrared part of the spectrum. 
B) visible part of the spectrum. 
C) ultraviolet part of the spectrum. 
D) entire electromagnetic spectrum.

Question 19

Glass is opaque to wave frequencies that

Accepted Answer

A) match its natural frequencies. 
B) are below its natural frequencies. 
C) both of these 
D) none of these 
A) match its natural frequencies. 
B) are below its natural frequencies. 
C) both of these 
D) none of these

Question 20

The fact that light travels at 300,000 km/s is a consequence of

Accepted Answer

A) electromagnetic wave propagation. 
B) electromagnetic field induction. 
C) Maxwell's laws. 
D) energy conservation. 
E) none of these 
A) electromagnetic wave propagation. 
B) electromagnetic field induction. 
C) Maxwell's laws. 
D) energy conservation. 
E) none of these

Exam 26: Properties of Light

When ultraviolet light is incident upon glass,atoms in the glass

A pair of sunglasses and a pair of clear reading glasses are left in the sunlight.The hotter glasses would be the

Red-hot and blue-hot stars appear white to the eye because

The natural frequency of the atoms in glass is in the

At the same time an astronaut on the moon sees a solar eclipse,observers on Earth see

The speed of light in the void between molecules in glass is

A solar eclipse occurs when the

Compared to its average speed in air,the average speed of a beam of light in glass is

The sensation of color is seen when light falls on the eye's

A partial solar eclipse occurs for people in the sun's

If an electric charge is shaken up and down

Consider light energy that is momentarily absorbed in glass and then re-emitted.Compared to the absorbed light,the frequency of the re-emitted light is

Things seen by moonlight usually aren't colored because moonlight

In the periphery of our vision,we are

The main difference between a radio wave and a sound wave is their different

Compared to radio waves,the velocity of visible light waves in a vacuum is

Information-carrying nerves are connected to the retina at

The Earth's atmosphere is transparent to most waves in the

Glass is opaque to wave frequencies that

The fact that light travels at 300,000 km/s is a consequence of

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