A ray of light after reflection from a mirror is known as
Reflected Ray
Correct Option (A).
Explanation For correct option -
Reflected Ray - The ray of light that is returned back into the same medium, after striking the reflecting surface, is called the reflected ray .
Explanation for incorrect option -
option (B) -
Normal - The perpendicular drawn on the surface at the point of incidence, is called the normal.
option (C) -
Incident Ray - The ray of light that strikes the surface is called the incident ray.
Option (D) -
Refracted Ray - The ray of light that bends when it enters from one medium to another medium.
Hence, option (A) is correct.