The Sun is seen about two minutes before the actual sunrise and for about two minutes after the actual sunset. This is due to which of the following?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Atmospheric refraction
Light from the Sun bends as it passes through layers of air of increasing density, which is called atmospheric refraction. Because of this bending, the Sun is seen while it is still slightly below the horizon, so sunrise appears about two minutes earlier and sunset about two minutes later.