The work function of a metal

The work function of metal A is higher than the work function of metal B. which of these metals has higher threshold wavelength?

The work function for a metal whose threshold wavelength is 5000 Å is

The work function for a metal whose threshold wavelength is 5000 Å is

The work function for a metal is 4eV. To emit a photoelectron of zero velocity from the surface of the metal, the wavelength of incident light should be :

The work function for a metal surface is 2.0 eV. Determine the longest wavelength that will eject photoelectrons from the metal surface.

The work function for a metal is 4eV. To emit a photoelectron of zero velocity from the surface of the metal, the wavelength of incident light should be :

The work function for a metal is 4eV. To emit a photoelectron of zero velocity from the surface of the metal, the wavelength of incident light should be :

Define work function of a metal .