Einstein's photoelectric equation : Kmax=λhc−φ=hν−φ The kinetic energy of the photoelectron coming out may be anything between zero and (E−φ) where E=λhc is the energy supplied to the individual electrons. Kmax=E−φ
Plot of stopping potential vs frequency of incident light
We know the relation of stopping potential V0 with frequency ν is V0=ehν−eW where W is the work function of the metal. If we want to plot the stopping potential V0 vs frequency ν, it will be a straight line with slope eh and negative y intercept eW
Interception of the plot
Slope: From the above graph we can see that the slope of the graph is constant,i.e., eh.
Intercept: The intercept is e−W. This is negative y intercept. This intercept depends upon work function of the metal, W. More the work function, more will be the magnitude of the intercept.