I have tried to search everywhere, but cannot find answer to this: does anyone know if there is a table etc. of what kind of images lenses and concave/convex mirrors produce with object in different places (real or virtual image, image magnification, upright/inverted), including virtual objects? It is easy to find sites showing what happens when object is in front of lense/mirror, but not virtual objects. For example, if its a converging lense, and object is < f, lense produces magnified upright virtual image. There is some kind of applet (http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=48.0) whuch might give the answer, but I cannot open it with my computer :/ This could be done by pend and paper of course, but I have a big entrance exam day after tomorrow and I do not simply have time so I would just memorize these quickly :( Thank you so much for your help!