The radiation corresponding to 3→2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. These electrons are passed through a magnetic field of 5×10−4 T. Assume that the radius of the largest circular path followed by these electrons is 7 mm, the work function of the metal is:
(Mass of electron = 9.1×10−31 kg)
A 1.36 eV
B 1.88 eV
C 0.16 eV
D 0.82 eV