If a ray of light is incident on a plane...

If a ray of light is incident on a plane mirror at an angle of `30^@`, then deviation produced by a plane mirror is .......

`30^@`

`60^@`

`90^@`

`120^@`

Text Solution

Verified by Experts

The correct Answer is:

A, B, D

According to the law of reflection
angle of incident = angle of reflection incident

From the geometry of figure,
angle of deviation
`=180^@-i-r=180^@-30^@-30^@=120^@`

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