The image formed by a plane mirror is always laterally inverted.
A. True
B. False

Hint – To state the properties of an image formed by a plane mirror we study the properties of a plane mirror.

Complete step-by-step solution -
A plane mirror is a mirror with a flat reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence.
An image formed by a plane mirror looks like this:

The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting. The image and object are the same distance from a flat mirror, the image size is the same as the object size, and the image is upright.
However, the image is a laterally-inverted "mirror image" of the object.
Hence Option A is the right answer.

Note – In order to answer these types of questions the key is to know the meaning of a plane mirror and its characteristics. The relation between a plane mirror and a curved mirror is mathematically, a plane mirror can be considered to be the limit of either a concave or a convex spherical curved mirror as the radius, and therefore the focal length becomes infinity.