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NEET 2010 Physics question

PhysicsRay Optics and Optical InstrumentsNEET 2010

The speed of light in media and are m/s and m/s respectively. A ray of light enters from medium to at an incidence angle . If the ray suffers total internal reflection, the value of is

Answer: (3)

Solution

Refractive indices: and . Light goes from the denser medium () to the rarer medium (), so TIR is

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Question ID VK-090342