Question

define Refractive Index of a transparent medium. what is its unit? Which has a higher refractive index, water or glass?

Answer 1

Refractive index of a transparent material is defined as the ratio of thespeed of the light in vacuum to thespeed of the light through medium i.e. Where, v = speed of light in medium, c= speed of light in vacuum it has no unitas it is ratio between similar quantities.glass has higher refractive index.