Question 1

Glass is transparent 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 B

Question 2

Infrared waves are often called heat waves because they

Accepted Answer

A) emanate from relatively hot sources. 
B) consist of frequencies lower than those of visible light. 
C) induce resonance in molecules and increase internal energy in a substance. 
D) are absorbed rather than reflected by the skin. 
E) are the predominant waves emitted by the sun. 
A) emanate from relatively hot sources. 
B) consist of frequencies lower than those of visible light. 
C) induce resonance in molecules and increase internal energy in a substance. 
D) are absorbed rather than reflected by the skin. 
E) are the predominant waves emitted by the sun. C

Question 3

The size of the pupil of your eye depends on

Accepted Answer

A) the brightness of light in the room. 
B) the temperature of the room. 
C) the time of day. 
D) your mood. 
E) two of these 
A) the brightness of light in the room. 
B) the temperature of the room. 
C) the time of day. 
D) your mood. 
E) two of these E

Question 4

If the sun were to disappear right now,we wouldn't know about it for 8 minutes because it takes 8 minutes

Accepted Answer

A) for the sun to disappear. 
B) to operate receiving equipment in the dark. 
C) for light to travel from the sun to the Earth. 
D) all of these 
E) none of these 
A) for the sun to disappear. 
B) to operate receiving equipment in the dark. 
C) for light to travel from the sun to the Earth. 
D) all of these 
E) none of these

Question 5

The cones in the retina of the eye are

Accepted Answer

A) most densely packed at the center of vision. 
B) uniformly spread along the visual field. 
C) concentrated along the periphery of vision. 
A) most densely packed at the center of vision. 
B) uniformly spread along the visual field. 
C) concentrated along the periphery of vision.

Question 6

The moon would be at its fullest just before the time of a

Accepted Answer

A) solar eclipse. 
B) lunar eclipse. 
C) both of these 
D) none of these 
A) solar eclipse. 
B) lunar eclipse. 
C) both of these 
D) none of these

Question 7

If a light signal and a radio signal were emitted simultaneously from Alpha Centauri,the first to reach Earth would be the

Accepted Answer

A) radio signal. 
B) light signal. 
C) both would reach Earth at the same time. 
A) radio signal. 
B) light signal. 
C) both would reach Earth at the same time.

Question 8

What is the frequency of an electromagnetic wave that has a wavelength of 300,000 km?

Accepted Answer

A) less than 1 Hz 
B) 1 Hz 
C) more than 1 Hz 
A) less than 1 Hz 
B) 1 Hz 
C) more than 1 Hz

Question 9

Compared to ultraviolet waves,the wavelength of infrared waves is

Accepted Answer

A) shorter. 
B) longer. 
C) the same. 
A) shorter. 
B) longer. 
C) the same.

Question 10

A lunar eclipse occurs when the

Accepted Answer

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

Question 11

Which of these electromagnetic waves has the shortest wavelength?

Accepted Answer

A) radio waves 
B) infrared waves 
C) X-rays 
D) ultraviolet waves 
E) light waves 
A) radio waves 
B) infrared waves 
C) X-rays 
D) ultraviolet waves 
E) light waves

Question 12

What is the wavelength of an electromagnetic wave that has a frequency of 1 hertz?

Accepted Answer

A) less than 1 m 
B) 1 m 
C) more than 1 m 
A) less than 1 m 
B) 1 m 
C) more than 1 m

Question 13

Electromagnetic waves consist of

Accepted Answer

A) compressions and rarefactions of electromagnetic pulses. 
B) oscillating electric and magnetic fields. 
C) particles of light energy. 
D) high-frequency gravitational waves. 
A) compressions and rarefactions of electromagnetic pulses. 
B) oscillating electric and magnetic fields. 
C) particles of light energy. 
D) high-frequency gravitational waves.

Question 14

The main difference between a radio wave and a light wave is its

Accepted Answer

A) speed. 
B) wavelength. 
C) frequency. 
D) all of these 
E) two of these 
A) speed. 
B) wavelength. 
C) frequency. 
D) all of these 
E) two of these

Question 15

The main difference between the retina of a human eye and that of a dog's eye is the

Accepted Answer

A) predominance of cones in a dog's retina. 
B) absence of cones in a dog's retina. 
C) more intricate optic nerve in a human's eye. 
D) absence of cones in a human's eye. 
E) none of these 
A) predominance of cones in a dog's retina. 
B) absence of cones in a dog's retina. 
C) more intricate optic nerve in a human's eye. 
D) absence of cones in a human's eye. 
E) none of these

Question 16

The source of all electromagnetic waves is

Accepted Answer

A) changes in atomic energy levels. 
B) vibrating atoms. 
C) accelerating electric charges. 
D) crystalline fluctuations. 
E) none of these 
A) changes in atomic energy levels. 
B) vibrating atoms. 
C) accelerating electric charges. 
D) crystalline fluctuations. 
E) none of these

Question 17

When visible light is incident upon clear glass,atoms in the glass

Accepted Answer

A) are forced into vibration. 
B) resonate. 
C) convert the light energy into internal energy. 
A) are forced into vibration. 
B) resonate. 
C) convert the light energy into internal energy.

Question 18

What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz?

Accepted Answer

A) less than 1 km 
B) 1 km 
C) more than 1 km 
A) less than 1 km 
B) 1 km 
C) more than 1 km

Question 19

While Earth is experiencing a total solar eclipse,an observer on the side of the moon facing the Earth would see

Accepted Answer

A) Earth disappear from the sky. 
B) Earth dim and turn reddish. 
C) nothing unusual. 
D) a tiny dark spot move across the face of Earth. 
A) Earth disappear from the sky. 
B) Earth dim and turn reddish. 
C) nothing unusual. 
D) a tiny dark spot move across the face of Earth.

Question 20

Which of the following cannot travel in a vacuum?

Accepted Answer

A) a light wave 
B) a sound wave 
C) a radio wave 
D) All can travel in a vacuum. 
E) None can travel in a vacuum. 
A) a light wave 
B) a sound wave 
C) a radio wave 
D) All can travel in a vacuum. 
E) None can travel in a vacuum.

Exam 26: Properties of Light

Glass is transparent to wave frequencies that

Infrared waves are often called heat waves because they

The size of the pupil of your eye depends on

If the sun were to disappear right now,we wouldn't know about it for 8 minutes because it takes 8 minutes

The cones in the retina of the eye are

The moon would be at its fullest just before the time of a

If a light signal and a radio signal were emitted simultaneously from Alpha Centauri,the first to reach Earth would be the

What is the frequency of an electromagnetic wave that has a wavelength of 300,000 km?

Compared to ultraviolet waves,the wavelength of infrared waves is

A lunar eclipse occurs when the

Which of these electromagnetic waves has the shortest wavelength?

What is the wavelength of an electromagnetic wave that has a frequency of 1 hertz?

Electromagnetic waves consist of

The main difference between a radio wave and a light wave is its

The main difference between the retina of a human eye and that of a dog's eye is the

The source of all electromagnetic waves is

When visible light is incident upon clear glass,atoms in the glass

What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz?

While Earth is experiencing a total solar eclipse,an observer on the side of the moon facing the Earth would see

Which of the following cannot travel in a vacuum?

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