the maximum kinetic energy of a photoelectron,Ek,max , to the smallest amount of energy,E0, needed to free an electron from the metal, and the energy,Eph , of the incident photons of light:

Ek,max =Eph –E0

In addition, you know from Equation 10.1 thatEph =hfwherehis the Planck constant andfis the frequency of the incident light.

Whichoneof the following graphs represents the relationship betweenEk,max andf?

attachment of graphs is attached.

thanks trigger.