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In a reflecting periscope , if a light r...

In a reflecting periscope , if a light ray is incident at `45^(@)` angle at the first plane mirror, then the angle of deviation of light ray by the periscope is ______ .

A

`30^(@)`

B

`90^(@)`

C

`180^(@)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
`i=45^(@)`

Angle of deviation =zero
Since incident ray is parallel to emergent ray.
Hence, the correct option is (d).
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