Question

b) Define Refractive Inden.​

Answer 1

Explanation:

Refractive index of transparent medium is defined as the ratio of speed of light in vacuum to the speed of light through medium. That is, Refractive index, n=vc.

Answer 2

Answer:

In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as n={\frac {c}{v}}, where c is the speed of light in vacuum and v is the phase velocity of light in the medium.