A certain microscope consists of an objective lens, (Lens 1),
and a tube lens (Lens 2). The object is placed at the front focal
plane of the objective lens and the image is at the back focal
plane of the tube lens. The tube lens has a focal length of 200mm.
The objective is labeled 20X, which means that the magnification
will be 20 when used with this particular tube lens. The working
distance (the distance from the object to...