Which of the following is responsible for the twinkling of stars?
A
Reflection of starlight
B
Refraction of starlight in the atmosphere
C
Diffraction of starlight
D
Absorption of starlight
Correct Answer: Option B — Refraction of starlight in the atmosphere
Explanation:
The twinkling of stars occurs due to the refraction of starlight as it passes through Earth's constantly moving and varying-density atmosphere. These fluctuations bend the light unpredictably, causing the apparent brightness and position of stars to flicker.