Electromagnetic Waves MCQs with Answers

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Electromagnetic Waves Online Quiz

By presenting 3 options to choose from, Electromagnetic Waves Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Electromagnetic Waves Questions and Answers and click over the correct answer.

• Test Name: Electromagnetic Waves MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Electromagnetic Waves

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1 / 40

The electromagnetic waves used in MRI machines are ________.

c) X-rays

b) microwaves

a) radio waves

2 / 40

Which type of electromagnetic wave can cause sunburn?

c) radio waves

a) ultraviolet

b) infrared

3 / 40

Which electromagnetic wave has the highest energy?

b) radio waves

c) infrared waves

a) gamma rays

4 / 40

Which type of electromagnetic waves can be used in cancer treatment?

a) X-rays

b) radio waves

c) infrared

5 / 40

Electromagnetic waves are produced by ________.

c) heat energy

a) vibrating charges

b) sound waves

6 / 40

Which type of electromagnetic waves has the shortest wavelength?

b) radio waves

a) gamma rays

c) visible light

7 / 40

Which type of electromagnetic waves can penetrate the Earth's atmosphere?

c) X-rays

a) radio waves

b) gamma rays

8 / 40

The process of bending of light waves due to a change in speed is called _____.

b) reflection

a) refraction

c) diffraction

9 / 40

Which electromagnetic wave has the highest frequency?

c) infrared waves

a) gamma rays

b) radio waves

10 / 40

The electromagnetic waves used in photography are ________.

b) X-rays

a) visible light

c) gamma rays

11 / 40

The electromagnetic waves used in radar are ________.

b) infrared

c) ultraviolet

a) microwave

12 / 40

The phenomenon of a wave bending around obstacles is called _____.

a) diffraction

c) refraction

b) reflection

13 / 40

Which type of electromagnetic wave can be used to sterilize medical equipment?

c) microwaves

a) ultraviolet

b) X-rays

14 / 40

Which electromagnetic wave can cause damage to living tissues?

b) radio waves

c) visible light

a) gamma rays

15 / 40

Electromagnetic waves travel in ________.

b) zigzag paths

a) straight lines

c) circular paths

16 / 40

Radio waves are used for ________.

a) communication

c) medical imaging

b) cooking

17 / 40

Which type of electromagnetic wave is often used in security systems?

a) infrared

c) ultraviolet

b) radio waves

18 / 40

What is the unit of frequency of electromagnetic waves?

a) Hertz (Hz)

b) Newton (N)

c) Pascal (Pa)

19 / 40

Infrared waves have _______ wavelengths compared to visible light.

b) shorter

c) equal

a) longer

20 / 40

Ultraviolet rays have _______ wavelengths compared to visible light.

c) equal

b) longer

a) shorter

21 / 40

Which electromagnetic wave is often used in astronomy to observe celestial objects?

b) ultraviolet

a) radio waves

c) gamma rays

22 / 40

Which electromagnetic wave has the lowest frequency?

a) radio waves

b) X-rays

c) ultraviolet

23 / 40

The color of visible light with the longest wavelength is _____.

b) violet

a) red

c) green

24 / 40

The range of radio waves is typically from ________.

a) kHz to GHz

c) THz to PHz

b) Hz to MHz

25 / 40

The range of visible light in nanometers is ________.

b) 100-200

a) 400-700

c) 800-1000

26 / 40

The electromagnetic waves used in satellite communication are ________.

a) microwaves

b) infrared

c) ultraviolet

27 / 40

Infrared waves are used for ________.

a) remote control

c) medical imaging

b) cooking

28 / 40

Which electromagnetic wave has the longest wavelength?

a) radio waves

b) gamma rays

c) ultraviolet

29 / 40

The unit of wavelength of electromagnetic waves is ________.

a) meters (m)

b) seconds (s)

c) Hertz (Hz)

30 / 40

The electromagnetic waves used in night vision goggles are ________.

a) infrared

b) ultraviolet

c) microwave

31 / 40

Electromagnetic waves transfer ________.

c) volume

a) energy

b) mass

32 / 40

The lowest frequency electromagnetic wave is _____.

b) gamma rays

c) X-rays

a) radio waves

33 / 40

Which electromagnetic wave is absorbed by the ozone layer?

c) radio waves

b) infrared

a) ultraviolet

34 / 40

The electromagnetic spectrum includes ________.

c) ocean waves

a) visible light

b) sound waves

35 / 40

The color of visible light with the shortest wavelength is _____.

c) green

a) violet

b) red

36 / 40

The speed of light in a vacuum is _______.

c) 9 × 10^8 m/s

a) 3 × 10^8 m/s

b) 6 × 10^8 m/s

37 / 40

Microwaves are used in ________.

c) medical imaging

a) cooking

b) communication

38 / 40

The electromagnetic waves used in Wi-Fi are ________.

c) ultraviolet

a) microwaves

b) infrared

39 / 40

Which electromagnetic wave is used in cooking appliances?

a) microwaves

b) infrared

c) ultraviolet

40 / 40

X-rays are used for ________.

b) cooking

a) medical imaging

c) communication

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