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Question

Name the wave which is used for taking photographs in the dark.


A

Visible light

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B

Infrared rays

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C

X rays

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D

Gamma rays

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Solution

The correct options are
B

Infrared rays


D

Gamma rays


The electromagnetic spectrum is the distribution of electromagnetic radiation according to the energy (or equivalently according to frequency or wavelength). It is generally divided into seven regions, in the order of increasing wavelength or decreasing energy and frequency as gamma rays, X rays, ultraviolet rays, visible light, infrared rays, microwaves, and radio waves.

Here, Infrared rays are used for taking photographs in the dark.


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