Question

define Refractive Index of a medium and Express it mathematically​

Answer 1

Answer:

the refractive index of a medium is defined as the ratio of speed of light in vaccum to the speed of light in the medium

refractive index=speed of light in vaccum÷speed of light in the medium

=c÷v

Answer 2

Answer:

Bending of light ray is called Refraction

refractive index (n) = c/v

Refractive index means that speed of light in vacuum divided by speed of light in medium