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MHT CET 2022 Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET 2022

Rays from a point source of light situated at height 'h' below the liquid surface having refractive index , form a circular patch of light of radius 'r' on the surface. The area of the patch is

Answer: (C)

Solution

Rays leave the surface only if their angle of incidence is less than the critical angle , where . The limiting ray reaches the surface at a horizontal distance . Now $θ_c = = Missing argument for \dfrac\dfrac{1/μ}{Missing argument for \sqrt\sqrt{1 -

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Question ID VK-097096