A concave mirror and convex mirror are cut from same spherical glass ball but the aperture of concave mirror is more than the aperture of convex mirror. What can be said about their focal lengths?
1
Focal length of concave mirror is more than that of convex mirror
2
Focal length of convex mirror is more than that of concave mirror
3
Both have same focal length
4
More than one of the above
5
None of the above