A plane mirror is a flat, smooth reflective surface that reflects light rays in a regular manner, creating an image of objects placed in front of it.
Images in a plane mirror appear to be the same distance behind the mirror as the object is in front of it, and they appear to be the same size as the object.
Images in a plane mirror are virtual, meaning they cannot be projected onto a screen. They only exist as an illusion in our minds.
The size of an image in a plane mirror is the same as the size of the object, as long as the object is placed at the same distance from the mirror as the distance between the mirror and the image.
If you move closer to the mirror, the image will appear larger. If you move farther away, the image will appear smaller. This is because the distance between the object and the mirror, as well as the distance between the mirror and the image, are changing.