Question

when light travel one medium to another medium it changes its velocity .this phenomena is​

Answer 1

Answer:

It's because of a phenomena called refraction.

Step-by-step explanation:

When a light beam travels from one medium to another, then it's velocity decreases or increases depending upon the optical density of the other medium.

Answer 2

Answer:

Refraction

Step-by-step explanation:

When a light beam travels from one medium to another, then it's velocity decreases or increases depending upon the optical density of the other medium.It's because of a phenomena called refraction.

I hope it helps u!