Light bounces off of the mirror and then appears to come from behind the mirror.
<h3><u>Explanation;</u></h3>
<u><em>Plane mirrors form images that are virtual, upright and the same size and shape as the object it is reflecting.</em></u>
<em><u>When rays of light from the object hits a plane mirror they bounces off the mirror,that is they undergo reflection, and appear to originate from behind the mirror, resulting to the formation of a virtual image.</u></em>
The image formed appears to be behind the plane in which the mirror lies. A virtual image is an image that is formed at a location from which the rays of light appear to come from. The image can not be formed on a screen.