Question

The duration of day becomes longer due to refraction light. Why?

Answer 1

Due to atmospheric refraction, the sun remains visible even after it sets and is visible even before it rises. Thus, the refraction increases the length of the day. From the calculations it has proved that sun rises 2 minutes earlier and sets 2 minutes later due to refraction. This means, the day becomes 4 minutes longer due to refraction.

Answer 2

PLZ MARK IT AS BRAINLIEST

Atmospheric refraction of the light from a star is zero in the zenith, less than 1′ (one arc-minute) at 45° apparent altitude, and still only 5.3′ at 10° altitude; it quickly increases as altitude decreases, reaching 9.9′ at 5° altitude, 18.4′ at 2° altitude, and 35.4′ at the horizon;[4]all values are for 10 °C and 1013.25 hPa in the visible part of the spectrum.
THESE ARE THE CALCULATIVE ANALYSIS