When one light ray is reflected from a plane mirror with 30° angle of reflection, the angle of deviation of the ray after reflection is: (a) 140° (b) 130° (c) 120° (d) 110°

Answer: (c). Angle of incidence = angle of reflection = 30°. Deviation δ = 180° - 2i = 180° - 60° = 120° So the answer is (c) 120°.

When one light ray is reflected from a plane mirror with 30° angle of… | JEE Main 2023 (11 Apr, Shift 2)

Q20JEE Main 2023 · 11 APR · SHIFT 2Easy

Reflection & Mirrors

When one light ray is reflected from a plane mirror with $30^\circ$ angle of reflection, the angle of deviation of the ray after reflection is:

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Answer: (c)

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