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Q.

Twinkling of stars is due to atmospheric_______.

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a

Dispersion of light by water droplets. 

b

Refraction of light by different layers of varying refractive indices. 

c

Scattering of light by dust particles. 

d

None of these

answer is B.

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Detailed Solution

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  • A medium with a progressively changing refractive index is where the atmospheric refraction takes place. 
  • The star's light rays continue to follow a slightly different path. The star's apparent position changes, and it looks to be twinkling.
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