Appeared in: 2026 (2 sets)
The stopping potential of photoelectrons is found to be $0.40\text{ V}$ when light of wavelength $500\text{ nm}$ is incident on a surface. The work function of the surface is close to :
(A) $1.20\text{ eV}$
(B) $1.48\text{ eV}$
(C) $2.08\text{ eV}$
(D) $6.48\text{ eV}$