Photons with energy 5 eV are incident on a
cathode C in a photoelectric cell. The maximum
energy of emitted photoelectrons is 2 eV. When
photons of energy 6 eV are incident on C, no
photoelectrons will reach the anode A, if the
stopping potential of A relative to C is :-
(1) - 1 V
(2) - 3 V
(3) + 3 V
(4) + 4 V