Question

In the time of sunset, why did the change in shape of the sun?

A) Reflection

B) Refraction

C) Internal refraction

D) Dispersion​

Answer 1

Answer:

Refraction at Sunrise and Sunset

This effect is especially powerful for objects that appear close to the horizon, such as the rising or setting Sun, because the light rays enter the Earth's atmosphere at a particularly shallow angle.

Answer 2

Explanation:

Instead of a perfectly-circular orbit, Earth's orbit around the Sun is slightly elliptical. ... The combination of Earth's elliptical orbit and the tilt of its axis results in the Sun taking different paths across the sky at slightly different speeds each day. This gives us different sunrise and sunset times each day.