Twinkling of a star is due to :
- A. Interference of light
- B. Refraction of light ✓
- C. Polarization of light
- D. Diffraction of light
Correct Answer: B. Refraction of light
Explanation
The twinkling of stars is caused by atmospheric refraction. As starlight passes through varying optical densities in Earth's turbulent atmosphere, it continuously changes path, altering its apparent brightness.
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