Principle

Two experimental variants for the determination of the focal
length of a convex lens are suggested, so that at least once the
students can discuss the advantages and disadvantages of each. The
second variation is less accurate but easier to understand than the
first. If the teacher decides to have the students carry out only
one variant, then the determination of the focal length by
autocollimation is to be preferred.

Benefits


Multifunctional light box - All-in-one: Can be used for geometric optics on the table, colour mixing and on an optical bench

Extension with others sets at anytime, no additional light sources needed, recognition value for students



Tasks

How is the focal length of a convex lens determined? Determine
the focal length of a convex lens (convergent lens) with two
different methods: 1. by autocollimation 2. by uniting parallel
light at the focal point.