JEE Main 2025 — Ray Optics Question with Solution
JEE Main 2025 (23 Jan Shift 2)
Question
The refractive index of the material of a glass prism is . The angle of minimum deviation is equal to the angle of the prism. What is the angle of the prism?
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Given
$\begin{aligned}
& \sqrt{3}=\frac{\sin A}{\sin \frac{A}{2}}=\frac{2 \sin \frac{A}{2} \cos \frac{A}{2}}{\sin \frac{A}{2}} \\
& \cos \frac{A}{2}=\frac{\sqrt{3}}{2} \\
& A=60^{\circ}
\end{aligned}$
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This is a previous-year question from JEE Main 2025, covering the Ray Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.