MHT CET 2023 Physics question
A ray of light is incident at an angle of incidence 'i' on one surface of a prism of small angle A and emerges normally from the other surface. If the refractive index of the material of the prism is '' then the angle of incidence is equal to
Answer: (C)
Solution
If the ray emerges normally from the second surface, the angle of emergence is , so the angle of incidence on the second face (inside the prism) is . For a prism , hence . Applying Snell's law at the first surface: . For
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