Question

Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.

Answer 1

The absolute refractive index is the value of refractive index of a medium with respect to the vacuum.

`mu_B=c/v`

where

c = Speed of light in vacuum

v = Speed of light in medium B

Here, `mu_B` is the absolute refractive index of medium B.