Question

In refraction of light through a prism, the light ray :

• A. suffers refraction only at one face of the prism
• B. emerges out from the prism in a direction parallel to the incident ray
• C. bends at both the surfaces of prism towards its base
• D. bends at both the surfaces of prism opposite to its base

Answer 1

Answer: (C)

bends at both the surfaces of prism towards its base

Answer is C.

A ray of light is deflected twice in a prism. The sum of these deflections is the deviation angle.
The deviation angle depends on the angle through which beam enters the object, called angle of incidence. The deviation angle first decreases with increasing incidence angle, and then it increases.
Hence, In refraction of light through a prism, the light ray, bends at both the surfaces of prism towards its base.