Homework Statement
In a particular photocell, light with a frequency of 8×10^14Hz is directed onto the cell and it is found that a stopping potential of 1.2V is needed to reduce the photoelectric current to zero.
Calculate the work function of the metal in the cell.
Homework Equations...
If light with a frequency of 4.41*10^15 Hz falls on a surface that gains 1.13*10^-16 J of energy, how many photons has the surface absorbed?
Probably simple, I've been using E = hf and such, but I got no idea from there
Help meeee please