Two plane mirrors are inclined at an angle of 60°. A light ray is incident at an angle 6 0 ∘ at point A on mirror M 1 . Total deviation suffered by ray after all possible reflections is :

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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at plane surfaceMedium2 minQB

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Two plane mirrors are inclined at an angle of 60°. A light ray is incident at an angle $6 0^{\circ}$ at point A on mirror $M_{1}$ . Total deviation suffered by ray after all possible reflections is :

Options:

Answer:

Solution:

The ray strikes each mirror at 60 degrees to the mirror surface.

Deviation at one reflection = 2 x 60 = 120 degrees.

With reflections at both mirrors the total deviation is 120 + 120 = 240 degrees.

Answer: D

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface

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