Question

what is refractive index

Answer 1

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

Answer 2

Answer:

Refractive index is the measure of bending of a light ray when passing from one medium to another. It can also be defined as the ratio of the velocity of a light ray in an empty space to the velocity of light in a substance .

n = c/v

where , n is the refractive index of the medium

c is the velocity of light in vacuum

v is the velocity of light in the medium

Explanation: