Question

A. What is the reason for the twinkling
of stars?
1. Explosions occurring in stars from
time to time
11. Absorption of light in the earth's
atmosphere
ui. Motion of stars
iv. Changing refractive index of the
atmospheric gases​

Answer 1

Explanation:

The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth's atmosphere, undergoes refraction continuously before it reaches the earth. The atmospheric refraction occurs in a medium of gradually changing refractive index.