Question

A ray of light travelling through air falls on the surface of a glass slab and emerges out of it parallel to the incident ray. The angle of incidence i, angle of refraction in glass r and angle of emergence is e. Find the ratio of sin i/ sin e and refractive index of glass in terms of e and r.
Plzz answer as soon as possible

Answer 1

Answer:

Since the speed of light in the denser medium is 2×108m/s, the refractive index of the medium is 

μ=vc=2×1083×108=23

From Snell's law,

sini=μsinr

⟹sin60∘=23sinr

⟹r=sin−131

I hope it helps you to understand.