STANDARDPhysics-Optics
STANDARD Physics Prism MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A ray of light passes through an equilateral prism (refractive index 1.5) such that angle of incidence is equal to angle of emergence and the later is equal to 3/4th of the angle of prism. The angle of deviation is
A
60°
B
30°
C
45°
D
120°
Correct Answer
Option B
Detailed Explanation
For an equilateral prism, the angle of deviation δ is given by δ = i + e - A. Given that i = e and e = 3/4 A, substituting these values gives δ = 30°.
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