Question

what is the work of a plane mirror​

Answer 1

A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface

Answer 2

Explanation:

to reflect the object image.

It gives the same height and distance of image from actual distance of object from mirror