Question

The twinkling of stars is because of which phenomenon of light?

• A. Reflection of light
• B. Atmospheric Scattering of light
• C. Atmospheric Refraction of Star light
• D. Total Internal Reflection of light

Hint:

Twinkling is not due to the star itself but the earth’s atmosphere. Think: refraction = bending = flickering effect.

Answer 1

The Correct Option is C

The twinkling of stars occurs due to the atmospheric refraction of starlight. As starlight enters the Earth's atmosphere, it passes through layers of air of varying density. This causes the light to bend or refract multiple times before it reaches the observer’s eyes. These changes in direction cause stars to appear as if they are shifting position or twinkling.