The time difference between the actual sunset and the apparent sunset is about 2 min. What is the reason for the same?
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5
Answer:
We see the Sun 2 minutes before the Sunrise because of atmospheric refraction. The air near the earth is optically denser than that at higher altitude. The sun rays travel from a rarer to denser medium. So the light rays coming from sun to earth get refracted and bends towards the normal. As a result, the sun appears 2 minute before the actual sunrise.
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3
Answer:
Explanation:
When the sun has actually set , the red light (max. wavelength) on refraction by the layers of atmosphere of Earth deviates but human eyes are unable to notice the deviation . this requires still more time for the sun to set (for us) even after it has actually set .
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