The diagram on the left illustrates
an experimental setup showing
photoelectric emission from the
surface of the cathode material
when light of sufficient frequency
falls on it.

This activity enables you to
investigate and discover the
relationship between the
frequency of light from the light source and the kinetic energy of
electrons emitted from the
cathode.

If you need to revise
the basic photoelectric concepts,
click on Basic Concepts,
otherwise go straight to the
Investigation.