WBCS.LIVE practice question

Twinkling of stars is on account of

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. large distance of stars and storms in air.
  2. rotation of earth.
  3. large size of stars.
  4. large distance of stars and fluctuations in the density of air.

Correct answer and explanation

Correct answer: large distance of stars and fluctuations in the density of air.

Explanation: āœ… Correct Answer: D) large distance... and fluctuations in density of air. šŸ“š Explanation: Stars are distant point sources of light. As their light passes through the Earth's atmosphere, it undergoes continuous refraction due to layers of air with varying densities and temperatures. This causes the apparent position and brightness of the star to shift rapidly, which we perceive as twinkling.