Question

Twinkling of stars is due to atmospheric ____________.

Options

• dispersion of light by water droplets

• refraction of light by different layers of varying refractive indices

• scattering of light by dust particles

• internal reflection of light by clouds

Answer 1

Twinkling of stars is due to atmospheric refraction of light by different layers of varying refractive indices.

Explanation:

Twinkling of stars is due to atmospheric refraction of starlight caused by the gradual change in the refractive index of different air layers at different heights, the apparent position of stars keeps on changing.