NEET2022Physics-Optics
NEET 2022 Physics Refraction MCQ Question
Type: MCQ-numerical-Medium-Class 12
Two transparent media A and B are separated by a plane boundary. The speed of light in those media are 1.5 × 10⁸ m/s and 2.0 × 10⁸ m/s, respectively. The critical angle for a ray of light for these two media is:
A
tan⁻¹(0.500)
B
tan⁻¹(0.750)
C
sin⁻¹(0.500)
D
sin⁻¹(0.750)
Correct Answer
Option C
Detailed Explanation
The critical angle is given by sin⁻¹(n₂/n₁), where n₂ and n₁ are the refractive indices of media A and B. Using the given speeds, sin⁻¹(0.500) is the correct answer.
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