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Two plane mirrors are perpendicular to e...

Two plane mirrors are perpendicular to each other. A ray after suffering reflection from the two mirror will be

A

perpendicular to the original ray

B

parallel to the first ray

C

parallel to the first mirror

D

at `45^(@)` to the original ray

Text Solution

Verified by Experts

(b) Here angular deviation is `delta=2pi-2theta`
`=2pi-2xx(pi)/2=pi`
Hene final emergent ray is parallel to incident ray.
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