Question

The arrow in the diagram represents a beam of light striking a triangular glass prism. On entering the glass, the beam
Figure

(a) bends towards A.
(b) bends towards B.
(c) is totally reflected back.
(d) continues without bending.

Answer 1

(b) bends towards B
The beam of light bends as it goes from one transparent medium (air) to another medium (glass). Because air is a rarer medium and glass is a denser medium, the beam is refracted towards the normal; thus, it bends towards B.