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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A ray of light travelling through air is incident on the surface of water in a lake. If the ray is inclined at with the surface and the refractive index of water is 4/3, then the angle through which the ray deviates is

Answer: (D)

Solution

i = 90° − 30° = 60°, sin r = sin60°/(4/3) = 3√3/8, deviation = i − r = 60° − sin⁻¹(3√3/8); options (a) and

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Question ID VK-076952