Photons of energy 5eV are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6eV to 8eV. Find the work function of the metal and state whether the current in the circuit is less than or equal to saturation current.
A. Work function of the metal is `2 eV`
B. Work function of the metal is `3 eV`
C. Current in the circuit is equal to saturation value.
D. Current in the circuit is less than saturation value.
