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A ray of light is reflected by a plane m...

A ray of light is reflected by a plane mirror. `hatepsilon_(0), hate` and `hatn` be the unit vectors along the incident ray, reflected ray and the normal to the reflecting surface respectively. Which of the following gives an expression for `hate` ?

A

`hatepsilon_(0) + 2(hatepsilon_(0).hatn)hatn`

B

`hatepsilon_(0) -2(hatepsilon_(0).hatn)hatn`

C

`hatepsilon_(0)-(hatepsilon_(0).hatn)hatn`

D

`hatepsilon_(0)+(hatepsilon_(0).hatn)hatn`

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