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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A beam of light is partially reflected and partial refracted from a surface. The angle between the reflected and refracted light is . The angle of refraction is . The angle of incidence must be

Answer: (B)

Solution

Reflected and refracted rays perpendicular give i + r = 90°, so i = 90° − 30° =

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Question ID VK-077000