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QJEEM22Ph57ac: JEE Main 2022 Physics - Class 12 JEEM22Ph57ac Solution: A light ray is incident, at an incident angle 1 , on the system …

A light ray is incident, at an incident angle θ\theta 1, on the system of tow plane mirrors M1 and M2 having an inclination angle 75 ∘^\circ between them (as shown in figure). After reflecting from mirror M1 it gets reflected back by the mirror M2 with an angle of reflection 30 ∘^\circ . The total deviation of the ray will be _____________ degree.

JEE Main 2022 (Online) 26th June Morning Shift Physics - Geometrical Optics Question 98 English

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JEE Main 2022 (Online) 26th June Morning Shift Physics - Geometrical Optics Question 98 English Explanation
On first reflection angel of deviation is 90° and on second reflection angle of deviation is 120°

So total deviation is δ\delta = 90° +120° = 210°

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