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 surface of prism towards its base
• D. Bends at both surfaces of prism opposite to its base.

Answer 1

The correct option is C Bends at both the surface of prism towards its base

The light ray suffers refraction at both the faces of the prism and in both cases it bends towards the base. During the first refraction it bends towards the normal to the surface, which is also towards the base. During the second refraction, the light ray bends away from the normal which is again towards the base.