AIPMT PRELIMS2012Physics-Optics
AIPMT PRELIMS 2012 Physics Prism MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A ray of light is incident at an angle of incidence, i on one face of a prism of angle A (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is μ, the angle of incidence i, is nearly equal to
A
A/2μ
B
μA
C
μA/2
D
A/μ
Correct Answer
Option B
Detailed Explanation
For small angles, the angle of incidence i is given by i = μA, derived from the condition of normal emergence.
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