Dual Nature Of Radiation

Statement I By increasing the potential difference between cathode and anode continuously in a photoelectric experiment, the photocurrent always increases continuously.

Statement II If two photons $A$ and $B$ of energies 2.5 eV and 3.5 eV respectively, fall on a metal surface of work function 2.0 eV , then the ratio of maximum kinetic energies emitted between $A$ and $B$ is 3 .

Statement III The maximum energy needed by an electron to come out from a metal surface is called the work function of the metal.

Which of the following is correct?