Question

define absolute refractive index and relativ refractive index ​

Answer 1

Answer:

Absolute refractive index of a medium is defined as the ratio of the velocity of light in vacuum to the velocity of light in the medium. If c is the velocity of light in vacuum and v in the medium, then n = c/v. The relative refractive index between a pair of media is the ratio of their absolute refractive indices.