Tag: characteristics of an image formed by a plane mirror

The image formed by a plane mirror is erect and virtual in nature and of same size as that of the object. The distance of image from the mirror, behind the mirror, is same as the distance of the object from the mirror, in front of the mirror.

A single plane mirror can form only a single image for a single object.

$ \bf{Plane\ Mirrors} $ always produce a virtual and erect image having the same size as that of the object irrespective of the position of object.

$ \bf{Plane\ Mirrors} $ always produce a $ \bf{virtual} $ and $ \bf{erect} $ image having the $ \bf{same\ size\ as\ that\ of\ the\ object} $ irrespective of the position of object on the principal axis.

Hence, the correct answer is OPTION A.

Real image is formed at a point where light rays actually meet where virtual image is formed at a point where rays of light appears to meet.

Images in a plane mirror are formed as far behind the mirror as the object in front of it. 
Thus, the distance of the image of an object from the mirror is equal to the distance of the object from the mirror. 

Hence, the correct answer is OPTION B.

It is obvious that if the object is shifted by a distance $d$ towards the mirror, the image will also shift the same distance $d$ towards the mirror i.e., the separation between the object and the image will decrease by $2d$.

A plane mirror is made from a few mm thick glass plate. One surface of glass plate is polished to a high degree of smoothness. This forms the front part of the mirror. And the other (back) surface is silvered (i.e painted with silver, mercury or some other material).

There are two kinds of reflection

I) Regular reflection

ii) Irregular reflection.

For plane mirror, the distance between object and mirror $=$ distance between image and mirror $=100$ (given)