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We observe twinkling of stars due to
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- frequent and periodic fluctuation of temperature of the surface
- constant change of refractive index of the medium between the stars and the Earth because of temperature variation
- great distance of stars from the Earth
- rise and fall of gaseous ball of fire inside the stars
Correct Option: B
NA
Comments
SANTOSH KUMAR
June 21, 2018Stars twinkle because their light must pass through pockets of Earth's atmosphere that vary in temperature and density which leads to a constant change of refractive index of the medium between the stars and the Earth.