A ray of light is incident on a plane mi...

A ray of light is incident on a plane mirror at an angle of incidence of `30^@`. The deviation produced by the mirror is

`30^(@)`

`60^(@)`

`90^(@)`

`120^(@)`

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

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