MHT CET 2026 Physics question
A ray of light incident on one face of an equilateral glass prism having refractive index , produces the emergent ray which just grazes along the adjacent face. The value of angle of incidence is (sin 90 = 1) ( ) ( )
Answer: (A)
Solution
The emergent ray grazes the second face, so the angle of emergence is . At the second face, , so and . For a prism , hence . At the
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