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 color of visible light with the longest wavelength is _____.

b) violet

c) green

a) red

2 / 40

Which type of electromagnetic wave can cause sunburn?

a) ultraviolet

b) infrared

c) radio waves

3 / 40

Electromagnetic waves travel in ________.

a) straight lines

c) circular paths

b) zigzag paths

4 / 40

Which electromagnetic wave is absorbed by the ozone layer?

a) ultraviolet

c) radio waves

b) infrared

5 / 40

The range of visible light in nanometers is ________.

b) 100-200

c) 800-1000

a) 400-700

6 / 40

Ultraviolet rays have _______ wavelengths compared to visible light.

a) shorter

b) longer

c) equal

7 / 40

Radio waves are used for ________.

c) medical imaging

a) communication

b) cooking

8 / 40

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

b) ultraviolet

c) gamma rays

a) radio waves

9 / 40

Which electromagnetic wave has the highest energy?

b) radio waves

c) infrared waves

a) gamma rays

10 / 40

What is the unit of frequency of electromagnetic waves?

c) Pascal (Pa)

a) Hertz (Hz)

b) Newton (N)

11 / 40

X-rays are used for ________.

a) medical imaging

c) communication

b) cooking

12 / 40

The range of radio waves is typically from ________.

a) kHz to GHz

c) THz to PHz

b) Hz to MHz

13 / 40

Infrared waves are used for ________.

a) remote control

c) medical imaging

b) cooking

14 / 40

Which electromagnetic wave has the lowest frequency?

a) radio waves

c) ultraviolet

b) X-rays

15 / 40

Which electromagnetic wave is used in cooking appliances?

c) ultraviolet

a) microwaves

b) infrared

16 / 40

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

c) infrared

a) X-rays

b) radio waves

17 / 40

Which electromagnetic wave has the highest frequency?

c) infrared waves

b) radio waves

a) gamma rays

18 / 40

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

b) reflection

a) diffraction

c) refraction

19 / 40

The electromagnetic waves used in Wi-Fi are ________.

a) microwaves

c) ultraviolet

b) infrared

20 / 40

The electromagnetic waves used in photography are ________.

a) visible light

b) X-rays

c) gamma rays

21 / 40

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

c) microwaves

b) X-rays

a) ultraviolet

22 / 40

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

c) diffraction

a) refraction

b) reflection

23 / 40

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

c) X-rays

a) radio waves

b) gamma rays

24 / 40

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

a) violet

c) green

b) red

25 / 40

Electromagnetic waves transfer ________.

c) volume

a) energy

b) mass

26 / 40

The electromagnetic waves used in satellite communication are ________.

a) microwaves

b) infrared

c) ultraviolet

27 / 40

Which electromagnetic wave has the longest wavelength?

c) ultraviolet

a) radio waves

b) gamma rays

28 / 40

Which electromagnetic wave can cause damage to living tissues?

a) gamma rays

b) radio waves

c) visible light

29 / 40

Which type of electromagnetic waves has the shortest wavelength?

a) gamma rays

c) visible light

b) radio waves

30 / 40

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

a) infrared

c) ultraviolet

b) radio waves

31 / 40

The electromagnetic waves used in night vision goggles are ________.

b) ultraviolet

a) infrared

c) microwave

32 / 40

The unit of wavelength of electromagnetic waves is ________.

a) meters (m)

c) Hertz (Hz)

b) seconds (s)

33 / 40

The electromagnetic waves used in MRI machines are ________.

b) microwaves

c) X-rays

a) radio waves

34 / 40

Infrared waves have _______ wavelengths compared to visible light.

a) longer

b) shorter

c) equal

35 / 40

Electromagnetic waves are produced by ________.

a) vibrating charges

b) sound waves

c) heat energy

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

The electromagnetic waves used in radar are ________.

a) microwave

b) infrared

c) ultraviolet

38 / 40

Microwaves are used in ________.

b) communication

a) cooking

c) medical imaging

39 / 40

The lowest frequency electromagnetic wave is _____.

a) radio waves

c) X-rays

b) gamma rays

40 / 40

The electromagnetic spectrum includes ________.

b) sound waves

c) ocean waves

a) visible light

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