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The twinkling of stars is due to

The twinkling of stars is due to Correct Answer Continuous varying refractive index of atmosphere

CONCEPT:

  • Refraction: When a ray of light passes from one medium to another it suffers a change in direction at the boundary of two media is called refraction.
  • The change in direction because the speed of light travels at different speeds in different mediums.
  • The Refractive Index of a medium defines that it is denser or rarer.

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EXPLANATION :

  • Different layers of atmospheric air with different density are found in the atmosphere.
  • When light is carried by the stars, it is constantly refracting in different layers.
  • As the layers of air are not stable so the stars are in different positions at different timelines, that is, the stars appear to be twinkling. So option 3 is correct.

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Twinkling of stars is due to
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