Question

A rectangular glass slab having refractive index 3 , is silvered at one surface as shown in the figure. If the angle of refraction of the light ray at the interface AB is 30°, then the measure of angle x will be

Answer 1

angle x = sin 30/sin x= 1/3

as the angle of incidence = 30
so, μₓᵃ= 3 or μₐˣ= 1/ μₓᵃ= 1/3

therefore sin x= 3 sin30= 3/2
x= sin⁻3/2

Answer 2

Answer:

Explanation:

angle x = sin 30/sin x= 1/3

as the angle of incidence = 30

so, μₓᵃ= 3 or μₐˣ= 1/ μₓᵃ= 1/3

therefore sin x= 3 sin30= 3/2

x= sin⁻3/2