Question

when weather changes, refractive index of air also changes ​

Answer 1

Explanation:

Air has a refractive index > 1 because molecules in the air scatters light and hinders light from traveling freely. The higher the density of the air, the more molecules there are per volume, and the more light is being obstructed. Therefore the refractive index also increases.

So if there is low temperature thus the air will be more dense and it's refractive index will change and at high temperature air will become less denser so here refractive index decreases

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