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

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

`176^(@)`

`4^(@)`

`178^(@)`

`2^(@)`

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DC PANDEY-RAY OPTICS-A. Only one option is correct (JEE Advance)

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