Question

what is refractive index and absolute refractive index​

Answer 1

Explanation:

Refractive index is defined as ratio of sine of angle of incidence to sine of angle of refraction. It is denoted by n or μ. Thus, refractive index is given by, Absolute refractive index: When the light is going from vacuum to another medium, then the value of refractive index is called the absolute refractive index

Answer 2

Answer:

Explanation:

This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line. The amount of bending depends on two things: Change in speed – if a substance causes the light to speed up or slow down more, it will refract (bend) more.