What is a spherical mirror
Aspherical mirror is a mirror which has the shape of a piece cut out of a spherical surface. There are two types of spherical mirrors: concave, and convex. The most commonly occurring examples of concave mirrors are shaving mirrors and makeup mirrors.
A spherical mirror is a part of a large spherical transparent glass painted on one side. If it is painted in the inner curved surface then it is convex and if outside then concave