A prism having an apex angle of \( 4^{\circ} \) and refractive inde...

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A prism having an apex angle of \( 4^{\circ} \) and refractive index of \( 1.50 \) is located in front of a vertical plane mirror as shown in the figure. A horizontal ray of light is incident on the prism. The total angle through which the ray is deviated is
(A) \( 4^{0} \) clockwise
(B) \( 178^{\circ} \) clockwise
(C) \( 2^{0} \) clockwise
(D) \( 8^{0} \) clockwise
\( \mathrm{P} \)
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