Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The incident ray, reflected ray and the outward drawn normal are denoted by the unit vectors 
and 
respectively. Then choose the correct relation for these vectors.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
We see from the diagram that because of the law of reflection, the component of the unit vector 
along 
changes sign on reflection while the component parallel to the mirror remain unchanges.
and 
we see that the reflected unit vector is
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