Question:medium

A ray of light incidents at an angle of $9.3^\circ$ on one face of a small angle prism of refracting angle $6^\circ$. If the ray of light emerges normally from the second face, the refractive index of the material of the prism is

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For a prism, the key relation is $r_1 + r_2 = A$. Normal emergence means the angle of emergence $e=0$ and the angle of refraction at the second face $r_2=0$. This immediately simplifies the relation to $r_1=A$.

Updated On: Mar 30, 2026

1.40
1.45
1.55
1.50

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The Correct Option is C

Solution and Explanation

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A ray of light incidents at an angle of $9.3^\circ$ on one face of a small angle prism of refracting angle $6^\circ$. If the ray of light emerges normally from the second face, the refractive index of the material of the prism is

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The Correct Option is C

Solution and Explanation

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