Question

A Ray of light in air is incident on a glass slab at an angle of incidence of 60degree.when it's travel through glass it is deviated through 15degree.what is the refractive index of material of the glass slab

Answer 1

Answer:

n=1.22

Explanation:

Light is deviated 15 degree so angle of refraction is 60-15=45 degree

using relation:

n1sinθ1=nsinθ2................where n1=1 (air)

n=sin60/sin45

 =1.22