JEE PHYSICS MCQ: RAY OPTICS

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Application +4 | -1

A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism

\mathrm{A}

) and emerges normally from the opposite surface. If the refractive index of the material of the prism is

\mathrm{\mu }

, then the angle
of incidence is nearly equal to:

View answer and explanation

Correct option: C

\mathrm{\mu }\,\mathrm{A}

Option C (

\mathrm{\mu }\,\mathrm{A}

) is correct because, for a small angle prism with normal emergence, the angle of incidence is approximately equal to the product of the refractive index and the prism angle.

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