Question

A narrow beam of white light goes through a slab having parallel faces.
(a) The light never splits in different colours.
(b) The emergent beam is white.
(c) The light inside the slab is split into different colours.
(d) The light inside the slab is white.

Answer 1

(b) The emergent beam is white.

(c) The light inside the slab is split into different colours.