Question

please answer it......​

Answer 1

Refractive index = speed of light air / speed of light in medium......

Answer 2

Answer:

Refractive index of a medium(μ)=speed of light in air(c)/speed of light in that medium(v)

Refractive index of medium 1(μ1)/Refractive index of medium 2(μ2) = Speed of light in medium 2 (v2)/Speed of light in medium 1(v1)

Explanation:

Snell's law

The ratio ratio of sine of angle of incidence to the sine of angle of refraction is a constant for the light of a given colour and for the given pair of media.

sin i/sin r=μ2\μ1=constant

μ2\μ1=v1/v2