How does the intensity of light affect the flow of current?

Download and open the PhET program.

Set the initial conditions as above. We will set the wavelength to 397 nm. Determine how the current changes as the as you increase the intensity over 10% increments. Tabulate your results in excel. The current produced by shining light on a metal is called the photocurrent

Plot your results and comment on what you see. Does this result support the wave model of light?

Repeat this experiment with a different colour of light. You may need to use bigger/smaller starting point. Was there a colour that did not work? How does this discovery relate to the wave theory of light?