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On account of atmospheric refraction

Answer»

SUN appears 4 minutes before actual sunrise.
sun DISAPPEARS 4 minutes before actual SUNSET.
sun is visible 2 minutes before actual sunrise.
sun becomes visible 2 minutes after actual sunrise.

Solution :On account of atmospheric refraction the sun becomes visible about 2 minutes before actual sunrise. Similarly, the sun REMAINS visible for 2 minutes even after actual sunset.


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