Question

What is refractive index?

Answer 1

Answer:

It is measure of the bending of a ray of light when passing from one medium into another.

➡️For all purposes, the speed of light in air as equal to the speed of light in vacuum.

Answer 2

Answer:

solved

Explanation:

refractive index is a measure of transparency of a medium for light passage through it

refractive index = speed of light in air(vacum) ÷ speed of light in the medium

= sin∝/sinβ

∝ = angle of incidence , β = angle of refraction

refractive index =  real depth ÷ apparent depth