Electromagnetic Waves – Worksheets MCQ | Multiple Choice Questions from the Electromagnetic Waves chapter – physics

1. Examples of electromagnetic waves include
   a. radio waves.
   b. light.
   c. X rays.
   d. all of the above
2. A vibrating electric field creates a
   a. mechanical wave.
   b. charged particle.
   c. magnetic field.
   d. photon.
3. As an electromagnetic wave travels through space, it
   a. becomes stronger.
   b. keeps changing direction.
   c. loses energy to the medium.
   d. spreads out over a larger area.
4. When electromagnetic waves strike matter, they may
   a. reflect.
   b. refract.
   c. diffract.
   d. all of the above
5. Which of the following statements about electromagnetic radiation is false?
   a. It provides virtually all the energy for life on Earth.
   b. It behaves like a wave most of the time.
   c. Sometimes it behaves like a particle.
   d. All of its wavelengths are harmful.
6. What do radio waves and sound waves have in common?
   a. Both waves are transverse waves.
   b. Both waves are mechanical waves.
   c. Both waves transfer energy.
   d. Both waves need a medium.
7. An electromagnetic wave consists of a vibrating
   a. magnetic field.
   b. electric field.
   c. particle of matter.
   d. two of the above

Answers to MCQ Worksheet 1

Multiple Choice

1. d
2. c
3. d
4. d
5. d
6. c
7. d

Electromagnetic Waves – MCQ Worksheet (with answer) – set 2

This MCQ set is Based on the Properties of Electromagnetic Waves.

1. Properties of electromagnetic waves include
   a. speed.
   b. wavelength.
   c. frequency.
   d. all of the above
2. Light slows down when it
   a. travels across space.
   b. passes from air to water.
   c. passes from water to air.
   d. two of the above
3. Electromagnetic waves may vary in their
   a. speed across space.
   b. energy level.
   c. frequency.
   d. two of the above
4. Wavelengths of electromagnetic waves range from
   a. many kilometers to a tiny fraction of a millimeter.
   b. millions of kilometers to several meters.
   c. several meters to a few millimeters.
   d. one kilometer to one millimeter.
5. The highest-frequency electromagnetic waves have a frequency of
   a. hundreds of waves per second.
   b. thousands of waves per second.
   c. millions of waves per second.
   d. trillions of waves per second.
6. If the wavelength of an electromagnetic wave is 3.0 m, what is its frequency?
   a. 9.0 X 10^2 hertz
   b. 6.0 X 10^4 hertz
   c. 3.0 X10^6 hertz
   d. 1.0 X 10^8 hertz
7. If the frequency of an electromagnetic wave is 3.0 X 10^8 hertz, what is its wavelength?
   a. 1 mm
   b. 1 cm
   c. 1 m
   d. 1 km
   

Answers to MCQ Worksheet 2

Multiple Choice

1. d
2. b
3. d
4. a
5. d
6. d
7. c

Electromagnetic Spectrum – MCQ Worksheet (with answer) – set 3

1. Which of the following choices lists electromagnetic waves from lower to higher frequencies?
   a. radio waves, infrared light, microwaves
   b. ultraviolet light, infrared light, X rays
   c. infrared light, ultraviolet light, gamma rays
   d. visible light, microwaves, ultraviolet light
2. Which electromagnetic waves have a wavelength about as wide as the nucleus of an atom?
   a. radio waves
   b. infrared light
   c. ultraviolet light
   d. gamma rays
3. Compared with FM radio broadcasts, AM radio broadcasts can
   a. carry more information.
   b. be heard more clearly.
   c. pass through the ionosphere.
   d. travel to more distant receivers.
4. Television broadcasts encode pictures by changing the
   a. frequency of radio waves.
   b. amplitude of radio waves.
   c. wavelength of radio waves.
   d. speed of radio waves.
5. Which type of electromagnetic waves are used for radar?
   a. ultraviolet waves
   b. radar waves
   c. microwaves
   d. X rays
6. Visible light with the longest wavelength appears to be
   a. violet.
   b. green.
   c. blue.
   d. red.
7. Uses of ultraviolet light include
   a. killing bacteria.
   b. sterilizing surgical instruments.
   c. making vitamin D by the skin.
   d. all of the above

Answers to MCQ Worksheet 3

Multiple Choice

1. c
2. d
3. d
4. b
5. c
6. d
7. d