The theory behind stars twinkling is that
A
The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time
B
The intensity of light emitted by them changes with time
C
The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere
D
The distance of the stars from the earth changes with time
Correct Answer: The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time
