The twinkling of stars is due to atmospheric:

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(B) The twinkling of stars is caused by the atmospheric refraction of starlight.As starlight enters the Earth's atmosphere,it undergoes continuous ref

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refraction of light by different layers of varying refractive indices

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(B) The twinkling of stars is caused by the atmospheric refraction of starlight.As starlight enters the Earth's atmosphere,it undergoes continuous refraction due to the presence of various layers of air with varying densities and refractive indices.These layers are in constant motion due to changing temperature and air currents,which causes the path of the light to fluctuate.As a result,the apparent position of the star shifts slightly,and the amount of light entering the eye varies,leading to the twinkling effect.

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