1. The problem statement, all variables and given/known data an image in a convex mirror is 12cm tall and 30cm from the mirror.IF the focal length is 50cm, where is the object and how tall. 2. Relevant equations (1/f)=(1/do)+(1/di) M= hi/ho =-di / do 3. The attempt at a solution i got 7.5cm for the object height but a convex mirror always gives a reduced image?