What are convex and concave mirrors? If the inner side of the spherical mirror is reflecting, it is called a concave mirror. If the outer side of the spherical mirror is reflecting, it is called a convex mirror. Concave mirrors can form inverted and real images and also virtual and erect images.
A concave mirror hard it's lens curved inward and a convex has its lens curved outwards.
A concave is similar to any thing with sunken relief and convex, high relief. A cave might be considered concave,had it been a mirror and a mountain convex .
