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\begin{figure}\centerline{ \psfig{file=problems/prob_12_7.eps,height=2.5in} }\end{figure}

A candle 10 cm high is placed 75 cm in front of the center of a thin lens. The lens has a focal length of 50 cm.

a) Find the location $s'$ of the image, its magnification, and indicate whether the image is real or virtual.

b) Draw a ray diagram to locate the image in agreement with your answers to a. Be sure to include the 3 rays that uniquely specify the image location.

Robert G. Brown 2003-02-09