168. A ray of light $SI$ hits face $AB$ of a prism and refracts such that the refractive index of the prism with respect to air is $\dfrac{4}{3}$. The entry into the prism: $(\sin 53° = 0.8)$ [Figure: A triangular prism with angles $53°$, $53°$, and $37°$ at vertices $A$, $S$, and $C$ respectively, with ray $I$ hitting face $AB$ and point $B$ at top]
It returns along the original path.
It exits from face $BC$ into air.
It undergoes total internal reflection on face $BC$.
It exits tangentially from face $BC$ of the prism.
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\textbf{168.} A ray of light $SI$ hits face $AB$ of a prism and refracts such that the refractive index of the prism with respect to air is $\dfrac{4}{3}$. The entry into the prism: $(\sin 53° = 0.8)$
\textit{[Figure: A triangular prism with angles $53°$, $53°$, and $37°$ at vertices $A$, $S$, and $C$ respectively, with ray $I$ hitting face $AB$ and point $B$ at top]}
\begin{enumerate}
\item It returns along the original path.
\item It exits from face $BC$ into air.
\item It undergoes total internal reflection on face $BC$.
\item It exits tangentially from face $BC$ of the prism.
\end{enumerate}
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\textit{Calculation Space}
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