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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
Solution
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
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