Question

6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following data: Stopping potential (V) 0.4 Frequency (THz) 560 700 780 830 1010 1210 1.3 1.7 2.4 From this data, and using Excel or an equivalent data tool, find a. the work function (in eV). b. the cutoff (threshold) wavelength for this material, c. the slope, d, an estimate of h e. What is your percent error in your h calculation? Include the Excel graph with your work.

Answer 1

I have used origin to plot the graph

and threshold frequency = 447.72 THz

y intercept = work function = 1.8267 eV

slope = 0.00408

h = 6.53 x 10^-34 Js

please rate it up thanks :)