Refraction is the bending of light waves when light passes from one medium to another. It occurs due to a change in speed as the wave crosses a boundary.
Refraction is the bending of light waves that occurs when a light wave passes from one medium to another of different density. This bending of light is due to a change in speed as the wave crosses a boundary and is called refraction.
https://brainly.com/question/41430346