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A light beam is being reflected by using...

A light beam is being reflected by using two mirrors, as in a periscope used in submarines. If one of the mirrors rotates by an angle `theta`, the reflected light will deviate from its original path by the angle

A

`2 theta`

B

`0^(@)`

C

`theta`

D

`4 theta`

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The correct Answer is:
A
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