A 2.0-cm-tall object is 40 cm in front of a converging lens that has a 20 cm focal length.
a. Use ray tracing to find the position and height of the image. To do this accurately, use a ruler or paper with a grid. Determine the image distance and image height by making measurements on your diagram.
b. Calculate the image position and height. Compare with your ray-tracing answers in part a.