Answers26-27 IC Physics 7614BWave Interactions

Electromagnetic Waves Answers

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1
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Which is the correct formula for finding the frequency of an electromagnetic wave?

A
f = c –
Option A
B
f =
Option B
C
f = + c
Option C
D
f =
Option D
2
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Which two electromagnetic waves are useful for diagnosing illnesses?

A
X-rays and radio waves
B
microwaves and gamma rays
C
gamma rays and visible light
D
radio waves and ultraviolet waves
3

Frank and Lisa are analyzing the chart, which shows the speed at which light travels through different media.Frank says that light travels through diamond with the greatest frequency. Lisa says that light travels through air with the greatest frequency.

Question illustration
A
Frank is correct because light travels through diamond at the slowest speed, and speed and frequency have an inverse relationship.
B
Lisa is correct because light travels through air at the fastest speed, and speed and frequency have a direct relationship.
C
Neither person is correct because light does not change frequency when it travels through different media.
D
Both people are correct because light has both an inverse and a direct relationship with frequency, depending on the media.
4

The diagram shows changing wavelengths along the electromagnetic spectrum.

Question illustration
A
Y: UltravioletZ: Radio
B
Y: Gamma raysZ: Visible light
C
Y: X-raysZ: Infrared
D
Y: RadioZ: Gamma rays
5

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

A
Wavelength and frequency decrease.
B
Wavelength and frequency decrease.
C
Wavelength and frequency increase.
D
Wavelength and frequency increase.
E
Wavelength increases, and frequency decreases.
F
Wavelength increases, and frequency decreases.
G
Wavelength decreases, and frequency increases.
H
Wavelength decreases, and frequency increases.
6

is a process that modifies light waves so they vibrate in a single plane.

Answer not available
7

"5.9"

Answer:

102083

8

An ultraviolet wave traveling through a vacuum has a wavelength of 4.0 × 10–7 m. The wave’s frequency, written in scientific notation to two significant figures, is × 1014 Hz.

Answer not available
9

Which lists the waves in order of frequency, from highest to lowest?

A
X-rays, gamma rays, ultraviolet
B
radio waves, visible light, X-rays
C
ultraviolet, microwaves, gamma rays
D
visible light, infrared, microwaves
10

What do all electromagnetic waves have in common?

A
They can travel at the speed of light.
B
They have the same wavelengths.
C
They travel only through matter.
D
They have nonmoving magnetic fields.

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Electromagnetic Waves Answers — 26-27 IC Physics…