Question

What happens to light

as it enters a medium?
A. It does not change.
B. It speeds up.
C. It slows down.
D. It stops.
K

Answer 1

When light enters a medium, it slows down due to refraction.

Step-by-step explanation:

When light enters a medium, it slows down.

This phenomenon is known as refraction, which is the change in direction (and speed) of light as it passes from one medium to another.

The amount of slowing down depends on the refractive index of the medium.

Learn more about Refraction of light