TS EAMCET 20-July-2022 Shift 1 Solved Paper

Statement I : By increasing the potential difference between cathode and anode continuously in a photoelectric experiment, the photo current always increases continuously.
Statement II : If two photons A and B of energies 2.5eV and 3.5eV respectively fall on a metal surface of work function 2.0eV, 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?