Question

X: Refractive index n=c/v
Y: Refractive index has no units
A) Both are correct B) X is correct, Y is wrong
C) X is wrong, Y is correct D) Both are wrong.

Answer 1

Explanation:

Acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. ... Any of these would be considered an acceleration since they change velocity.