Question

How refraction of light is related to refractive index?

Answer 1

For a given angle of incidence, the extent of refraction of light is different in different media.

•  When the refractive index of the second medium is greater than the refractive index of the first medium, the refracted ray bends more towards the normal.
•  When the refractive index of the first medium is greater than the refractive index of the second medium, the refracted ray bends away from the normal.