1. The problem statement, all variables and given/known data When an object is at distance u1 and u2 from pole of concave mirror, images of same size are formed. Find the focal length of the mirror. 2. Relevant equations 1/v+1/u=1/f 3. The attempt at a solution Can u please ray diagram for this question. I think their is only one point from which image of size of object form(that's 2f). But it is giving two points. So how to do it..