A curved shining surface of an object acts as a mirror.
- Most common types of curved mirrors are called spherical mirrors.
- Spherical mirrors are classified based on their reflective surface as one of two types, concave and convex.
- When a part of sphere is cut, the inside part is called the concave side, while the outside part is called the convex side.
- A common example is a stainless steel spoon whose inside part behaves as a concave and outer part behaves as a convex mirror.