1. [B] Refraction of light by different layers of varying refractive indices As we know that, due to refraction of light by different layers of varying refractive indices, the apparent position of source of light keeps on changing where our atmosphere play a vital role. So, stars appear to Twinkle.

    [B] Refraction of light by different layers of varying refractive indices
    As we know that, due to refraction of light by different layers of varying refractive indices, the apparent position of source of light keeps on changing where our atmosphere play a vital role. So, stars appear to Twinkle.

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