- #1
hayyan1
- 9
- 0
Homework Statement
Hello, i was doing an experiment in which you shine different colours of light onto a cathode and apply negative voltage to the anode so that the photo current reduced to a constant value.
I obtained the average stopping potential for each wavelength of light (green yellow blue violet turquoise) and now i was going to plot average stopping potential versus frequency. Now the gradient of this graph multiplied by the charge of the electron gives me Plancks constant (h=e(ΔV/Δf)).
However my problem is, does the line of best fit go through the origin or not?