Question

What happens to the speed of light as it exits the air and enters a glass of water?
A
It slows down.

B
It speeds up.

C
It remains constant.

D
It first slows down and then speeds up.

Answer 1

Answer:

A. It's slows down.

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it ‘bends’ more towards the normal line.

Explanation:

Mark me as brainliest.