Question

A. What is the reason for the twinkling
of stars?
i. Explosions occurring in stars from
time to time
ii. Absorption of light in the earth's
atmosphere
iii. Motion of stars
iv. Changing refractive index of the
atmospheric qases

Answer 1

Answer:

I). Explosion Occuring In Star from time to time

Answer 2

Answer:

iv)

Changing refractive index of theatmospheric qases

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.

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