Question

apparent duration of a day from sunrise to sunset is 4 minutes more than its actual duration explain how

Answer 1

we can see the sun about 2 minutes before the actual sunrise and minutes after the actual sunset because of atmospheric refraction
when the sun is slightly below the Horizon, then the sun's light coming from less dense your two more days a year is refracted down both as it passes through the atmosphere because of this atmospheric refraction, the sun appears to be raised Above The Horizon when actually it is slightly below the Horizon.
so the time from Sunrise to Sunset is lengthened by 2+2=4 minutes because of atmospheric refraction

Answer 2

Answer:

hopefully it's helpful to you

Explanation:

the answer is in the pic