Question

(i) What is refraction?

(ii) How can sunrise and sunset be thought of as an example of refraction?

Answer 1

(i)Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media.

(ii)here is a link for your solution

https://byjus.com/physics/advanced-sunrise-and-delayed-sunset/amp/