Question

As a ray of light entered medium P from medium Q, its velocity increased.
What can be said about the refractive index of medium P as compared to that of the medium Q?

A. It is lower.
B. It is higher.
C. It is the same.
D. Nothing can be said without
knowing what medium P and
medium Q are.​

Answer 1

Answer:

it is lower (a)

Explanation: