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Q.

The refraction of light by the earth’s atmosphere due to variations in air density is called


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a

Atmospheric reflection

b

Atmospheric dispersion

c

Atmospheric scattering

d

Atmospheric refraction  

answer is D.

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Detailed Solution

Refraction of light by the earth’s atmosphere due to variation in air density is called atmospheric refraction.
Atmospheric refraction is the light deviation or other electromagnetic waves from a straight line passes through the atmosphere due to the variation in density of the air as height changes. The main reason for this is the bending of light rays when they pass through a layer of the earth's atmosphere of different optical densities. Atmospheric refraction near the ground produces mirages.
 
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