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A ray of light makes an angle of 10^@ wi...

A ray of light makes an angle of `10^@` with the horizontal and strikes a plane mirror which is inclined at an angle `theta` to the horizontal. The angle `theta` for which the reflected ray becomes vertical, is

A

`40^(@)`

B

`50^(@)`

C

`80^(@)`

D

`100^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) If `theta=40^(@)`, then ray of light will become vertical after reflection.
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