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

Visible light

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Infrared rays

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X rays

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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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(a) Arrange the following radiations in the order of their increasing wavelength :

X rays, infrared rays, radio waves, gamma rays, and micro waves.

(b) Name the radiation which is used for satellite communication.

The order in which the rays in the electromagnetic spectrum are arranged is:-

Infrared rays - X rays - Radiowaves - Microwaves - Gamma rays - UV rays - Visible

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