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NEET 2016 Physics question

PhysicsRay Optics and Optical InstrumentsNEET 2016

The angle of incidence for a ray of light at a refracting surface of a prism is . The angle of prism is . If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:

Answer: (2)

Solution

At minimum deviation the ray passes symmetrically, so the angle of incidence equals the angle of emergence: , and . Refractive index: \dfracExtra open brace or missing close brace{\sin\frac${A +

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Question ID VK-091856