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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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Knowledge Check

  • The reflected rays at a plane mirror can form a real image

    A
    if the incident rays at the mirror are convergent
    B
    if the incident rays at the mirror are divergent
    C
    under no circumstances
    D
    if the object is situated very close to the mirror

  • What will be the angle incidence if the incident ray and reflected ray become perpendicular to each other?

    A
    `30^@`
    B
    `45^@`
    C
    `60^@`
    D
    `90^@`

  • If a ray of light is incident on a plane mirror at an angle of 70^@ find the angle of deviation of the ray?

    A
    `104^@`
    B
    `100^@`
    C
    `0^@`
    D
    `45^@`

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