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  4. Find the value of the angle of emergence from the prism. Refractive index of the glass is √3.

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Q. Find the value of the angle of emergence from the prism. Refractive index of the glass is $\sqrt{3}$.Physics Question Image

NEETNEET 2021Ray Optics and Optical Instruments

Solution:

image
$
\begin{array}{l}
r_{1}+r_{2}=A=30^{\circ} \\
r_{2}=30^{\circ}\left(r_{1}=0^{\circ}\right)
\end{array}
$
From Snell's law,
$\sqrt{3} \sin r_{2}=1 x$ sine
$
\begin{array}{l}
\sqrt{3} \sin 30^{\circ}=\text { sine } \\
e=60^{\circ}
\end{array}
$