MHT CET 2022 Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET 2022

The speed of light in two media and are m/s and m/s respectively. If the light undergoes total internal reflection, the critical angle between the two media is

Answer: (D)

Solution

Total internal reflection occurs when light goes from the denser (slower) medium to the rarer medium . Refractive index is inversely proportional to speed, so $

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Question ID VK-096937