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Question 1:

Which type of electromagnetic wave has the longest wavelength?

A) Radio waves
B) Microwaves
C) Infrared
D) Gamma rays

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Explanation: The correct answer is A) Radio waves. Radio waves have the longest wavelength among the given options and can range from several meters to kilometers.

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Question 2:

Which type of electromagnetic wave has the highest energy?

A) Microwaves
B) X-rays
C) Ultraviolet
D) Gamma rays

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Explanation: The correct answer is D) Gamma rays. Gamma rays have the highest energy among the given options and are associated with nuclear processes and high-energy phenomena in the universe.

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Question 3:

Which type of electromagnetic wave is used for communication in devices like mobile phones and radios?

A) Radio waves
B) Microwaves
C) Infrared
D) Ultraviolet

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Explanation: The correct answer is A) Radio waves. Radio waves are commonly used for communication purposes, including broadcasting radio and television signals, as well as in mobile phone networks.

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Question 4:

Which type of electromagnetic wave is responsible for causing sunburns and can damage the DNA in cells?

A) X-rays
B) Visible light
C) Ultraviolet
D) Infrared

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Explanation: The correct answer is C) Ultraviolet. Ultraviolet (UV) rays have higher energy than visible light and can cause sunburns and damage the DNA in cells, leading to potential health risks.

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Question 5:

Which type of electromagnetic wave is used in night vision goggles and remote controls?

A) Microwaves
B) Infrared
C) Visible light
D) X-rays

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Explanation: The correct answer is B) Infrared. Infrared waves are used in night vision goggles to detect thermal radiation emitted by objects, and they are also used in remote controls to transmit signals to electronic devices.