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Why is the Sun visible 2 minutes before sunrise and 2 minutes after sunset?
Answer & Solution
Correct answer: B.
1. Atmospheric layers bend sunlight progressively as it traverses denser air.
2. This bending makes the Sun visible while it is still geometrically below the horizon.
3. Hence apparent sunrise is 2 minutes before the real sunrise.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.5_
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