NDA 2022 Physics question

The twinkling of a star is due to the atmospheric

(A)diffraction of starlight
(B)reflection of starlight
(C)refraction of starlightCorrect
(D)dispersion of starlight

Answer: (C)

Solution

Starlight passes through layers of air whose density and refractive index keep changing, so it is refracted by continuously varying amounts. The apparent

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Question ID VK-032069