Question

Describe atmospheric refraction.
Explain with the help of diagram
why the sun is visible to us two
minutes before the actual
sun rise and two minuter ever
after the sunset​

Answer 1

Answer:

When the sun is just below the horizon, the light rays coming from it , on entring the Earth's atmosphere suffer atmospheric refraction from a rarer to denser medium . so, they bend towards the normal at each refraction. ... As a result , we can see the sun 2 mins. before it rises above the horizon in the morning .

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