NEET2024Physics-Optics
NEET 2024 Physics Prisms MCQ Question
Type: MCQ-conceptual-Hard-Class 12
A light ray enters through a right angled prism at point P with the angle of incidence 30° as shown in figure. It travels through the prism parallel to its base BC and emerges along the face AC. The refractive index of the prism is:
A
√3/4
B
√3/2
C
√5/4
D
√5/2
Correct Answer
Option D
Detailed Explanation
The refractive index can be calculated using Snell's law and the geometry of the prism. The angle of refraction at the first interface is 30°, and the light travels parallel to the base, indicating total internal reflection. Solving gives the refractive index as √3/4.
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