Given a graph of stopping potential vs frequency from a phot

Given a graph of stopping potential vs. frequency from a photoeletric experment, how might one find planks constant and the work function of the material in which light is incident in general? In specific, solve for these values given the trend line V = (4.13E-15)f - 1.90.

Solution

Stopping potential

             V = h f - W

Here, h is plancks constant , f is frequency , and w is work function

Compare the give equation with the above equation.

        V = ( 4.13 x10 ^-15 ) f - 1.90

Plancks constant h = 4.13x10^-15 eV. s

work function W = 1.90 eV