Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A light ray is incident, at an incident angle 
, on the system of two plane mirrors 
and 
having an inclination angle 
between them (as shown in figure). After reflecting from mirror 
it gets reflected back by the mirror 
with an angle of reflection 
. The total deviation of the ray will be degree.
Text Solution
Verified by ExpertsThe correct answer is:
210
(210) 
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