Eli5: How Plane mirror can show full image of the object when the size of the given mirror is half of the height of that object ?

Question

[HERE PHOTOS](http://imgur.com/a/cZVtL6i)

In: Physics

Answer 1

A mirror will make a virtual image that you can look at *behind* the mirror, at a distance behind it equal to the distance between you and the mirror. Twice the distance means half the angular height. Imagine a triangle going between you and the edges of the mirror. Now move the mirror twice as far away and extend the triangle to that new distance: the corners of the triangle are now twice as far apart as the edges of the mirror. So you could use half the mirror, and still not clip off any of the image.