Physics Forums

Hi,

I am new to this forum, doing A level physics, and have problems with photoelectrons and quanta etc...

This is a question I would like help with:

"Experiments on the photoelectric effect show that:

-the kinetic energy of photoelectrons released depends upon the frequency of the incident light and not on its intensity

-light below a certain threshold frequency cannot release photoelectrons

How do these conclusions support a particle theory but not a wave theory of light?"

I would apprecaite any input.

Thanks