A prism having an apex angle 4^(@) and r...

A prism having an apex angle `4^(@)` and refraction index 1.5 is located in front of a vertical plane mirror as shown in the figure. Through what total angle is the ray deviated after reflection from the mirror

`4^(@)` clockwise

`178^(@)` clockwise

`2^(@)` clockwise

`8^(@)` clockwise

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N//a

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