A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is:
(a) 0∘(b)45∘(c)60∘(d)90∘
An obliquely incident light ray bends at the surface due to change in speed, when passing from one medium to other. The ray does not bend when it is incident normally. Will the ray have different speed in other medium?
A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of : (a) 0∘(b) 45∘ (c) 90∘ (d) 120∘