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Q:

Which of the following statements is not caused due to atmospheric refraction?

  • 1
    Sun becomes visible two minutes before actual sunrise .
  • 2
    Twinkling of stars at night .
  • 3
    Sun appears higher than its original position.
  • 4
    Sun appears red at sunset.
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Answer : 4. "Sun appears red at sunset. "
Explanation :

Sun appearing higher than it actually is, is not caused due to atmospheric refraction of light. The sun appears higher or lower in the sky due to the changing position of the Earth relative to the Sun.

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