Question

The correct sequencing of angle of incidence, angle of emergence, angle of refraction and lateral displacement shown in the following diagram by digits 1, 2, 3 and 4 is:

(a) 2, 4, 1, 3
(b) 2, 1, 4, 3
(c) 1, 2, 4, 3
(d) 2, 1, 3, 4

Answer 1

Angle 2 is angle of incidence. As, it is formed between the incident ray and the normal.

Angle 1 is angle of emergence. As, it is formed between the emergent ray with normal. 

Angle 4 is angle of refraction. As, it is formed between the refracted ray and the normal. 

3 shows the lateral displacement.

Hence, the correct answer is 2, 1, 4, 3