Emphasis: It can be the point on the principal axis, wherever the light rays parallel into the principal axis will converge (in the case of the concave mirror) or show up to diverge from (in the case of the convex mirror) immediately after reflection with the mirror. Eventually, the http://jaidenrkbsi.blogdal.com/1526614/how-concave-mirror-can-save-you-time-stress-and-money