Atmospheric Refraction

Two statements are given - one labelled Assertion (A) and the other labelled Reason (R). Read the statements carefully and choose the option that correctly describes statements A and R. Assertion (A): Stars would not twinkle if we viewed them from the moon. Reason (R): Stars appear to twinkle due to atmospheric refraction of starlight.

Atmosphere

Atmosphere

Give two examples of the effect of atmospheric a refraction on a small scale in local environment.

Explain how twinkling of stars is an effect of atmospheric conditions on refraction of light.

An atmosphere

An atmosphere :

We know that light refracts (or bends) when it goes from one medium to another. Now, the atmosphere contains only air. Then how does light get refracted on passing through only air in the atmosphere ?

What is the correct reason for blinking // flickering of stars ? Explain it. a. The blasts in the stars. b. Absorption of star light by the atmosphere. c. Motion of the stars. d. Changing refractive index of gases in the atmosphere.