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  4. The apparent flattening of the sun at sunset and sunrise is due to

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Q. The apparent flattening of the sun at sunset and sunrise is due to

KEAMKEAM 2014Ray Optics and Optical Instruments

Solution:

The apparent flattering of the sun at sunset and sunrise is due to refraction, because the sun becomes visible a little before actual sunrise and remains visible a little after actual sunset, because of atmosphere refraction of light.