Twinkling of stars is related to the phenomenon of ____________.

Correct option is C

Correct Answer: C. Refraction of light

Explanation:​

• The twinkling of stars is caused by the refraction of light as it passes through the Earth's atmosphere.
• This phenomenon occurs because the Earth's atmosphere consists of layers with varying densities and temperatures, causing the light from stars to bend multiple times in different directions.

Key Points:

• Atmospheric Refraction: The light from stars travels through layers of air with varying refractive indices, causing it to change direction frequently.
• Apparent Motion: This bending makes the stars appear to shift slightly, and the intensity of their light seems to fluctuate, creating the "twinkling" effect.
• Stars vs. Planets: Stars twinkle more because they are point sources of light, while planets do not twinkle as much due to their larger apparent size, which averages out the refraction effects.

Other Options Explained:

• Interference of light: Not related to twinkling; it deals with superposition of light waves.
• Reflection of light: Occurs when light bounces off a surface, not relevant to twinkling.
• Dispersion of light: Refers to the splitting of light into its constituent colors, seen in rainbows, not twinkling.