In a photoelectric experiment using a Potasium surface, you irradiate the surface with five different wavelengths and find five corresponding stopping potentials: # X Vo 1. 162nm 5.21V 2. 162nm 5.16V 3. 486nm 0.27V 4. 432nm 0.60V 5. 270nm 2.30V Plot a graph of the Stopping Potential versus Frequency of the light. What is the theoretical value of the slope of this plot? x10-15 J . s/C What value did you find? x10-15 J . s/C What is your value for the cutoff frequency? x 1015 Hz