A ray of light passes from medium 1 into medium 2 and then emerges into medium 3
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A ray of light passes from medium 1 into medium 2 and then emerges into medium 3. If media 1 and 3 have the same refractive index, which statement about the emergent ray is correct (neglect absorption)?
(a) The emergent ray coincides exactly with the incident ray (no shift at all).
(b) The emergent ray bends away from the normal more than the incident ray.
(c) The emergent ray is parallel to the incident ray but is laterally displaced.
(d) The emergent ray makes an angle with the incident ray equal to the angle of refraction inside the slab (i.e. net deviation = r).