To verify the lens formula, and to construct a simple optical microscope using
a pair of lenses.
2. Theory
The lens formula
If an object is placed at a distance u in front of a convex lens L with the focal
length f, it is possible to form an image at a distance v behind the lens. The relation
between the focal length f, the object distance u, and the image distance v can be seen
in Fig. 12.1.
Figure