state gov Allahabad High Court Stenographer 2024 Mock Test Series General Knowledge Science Technology and Inventions
The theory behind stars twinkling is that
1
The refractive index of the different layers of earth’s atmosphere changes continuously; consequently the position of the star’s image changes with time.
2
The intensity of light emitted by them changes with time
3
The light from the star is scattered by the dust particles and air molecules in the earth’s atmosphere
4
The distance of the stars from the earth changes with time