A person walks at a velocity v in a stra...

A person walks at a velocity v in a straight line forming an angle `alpha` with the plane of a mirror. Determine the velocity `v_("rel")` which he approaches his image, assuming that the object and its image are symmetric relative to the plane of the mirror.

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A person walks at a velocity v in a straight line forming an angle theta with the plane of a plane mirror. With what velocity v_(rel) the apporaches his image ?

`2v sin theta`

`v sin ((theta)/2)`

`2 v cos theta`

`v cos ((theta)/2)`

The image of a real object formed by a plane mirror is -

Erect, real and of equal size

Erect virtual and of equal size

Inverted, real and of equal size

Inverted, virtual and of equal size

Which of the following is not the case with the image formed by plane mirror ?

It is erect

It is virtual

It is diminished

It is at the same distance as the object