Principle purpose of this lecture is to present on Curved Mirrors. It is a tutorial study based lecture. A convex mirror is a spherical reflecting surface (or any reflecting surface fashioned into a portion of a sphere) in which its bulging side faces the source of light. Concave Spherical Mirror: A spherical mirror with light reflecting from its silvered, concave surface. Concave mirrors are used whenever a magnified image of an object is needed.