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Question

Twinkling of stars is due to

A
Reflection
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B
Dispersion
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C
Atmospheric refraction
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D
None of these
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Solution

The correct option is C Atmospheric refraction
Twinkling of stars is due to atmospheric refraction. When light from stars enters the earth's atmosphere, it continuously goes from rarer to a denser medium, therefore, refraction of light takes place. This refraction of light that takes place in the atmosphere is known as atmospheric refraction.

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