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NEET 2010 Physics question

PhysicsRay Optics and Optical InstrumentsNEET 2010

A ray of light is incident on a prism at the minimum deviation position. The angle of refraction at the first face (i.e., incident face) of the prism is

Answer: (2)

Solution

For a prism, . At minimum deviation the ray passes symmetrically through the prism, so and . With : $r = A/2 =

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Question ID VK-090343