Convex mirror and concave mirror.



Convex mirror
Concave mirror
1.       It is called as diverging mirror.
2.       The light is reflected from outer surface.
3.       It can form only a virtual image.  
4.       According to sign convention, focal length is positive.
1.       It is called as converging mirror.
2.       The light is reflected from inner surface.
3.       It can form a real image as well as virtual image.  
4.       According to sign convention, focal length is negative.