Question:

The change in the colour of stars is linked to:

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Blue stars = hottest; red stars = coolest among visible stars.
Updated On: Aug 11, 2025
  • Variation in their surface temperature
  • Variation in their distance from the earth
  • Fluctuation in their composition and size
  • Irregular absorption or scattering in earth's atmosphere
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The Correct Option is A

Solution and Explanation

The colour of a star is determined by its surface temperature: - Hotter stars appear blue/white - Cooler stars appear red/orange The change in colour indicates a change in surface temperature.
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