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 refraction index of glass in terms of e and r

Answer 1

Explanation:

In case of a glass slab, the incident ray is parallel to the emergent ray, that means the angle of incidence is equal to the angle of emergence. The explanation is as follows: When a ray of light is incident on the surface of the glass slab, it undergoes refraction.