Question

relation between the refractive index of two media

Answer 1

Refractive index=Sine of angle of incidence in the first medium/Sine of angle of refraction in the second medium

Answer 2

Let the refractive index of the first medium be called n1 and the refractive index of the second medium be called n2.

The relationship may be expressed as follows: n2/n1 = c1/c2 where c1 is the speed of light in medium 1 and c2 is the speed of light in medium 2