Work function of a metal is `2.1 eV`. Which of the waves of the following wavelengths will be able to emit photoelectrons from its surface ?

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

Work function of a metal is 4.0 eV. Find the maximum value of wavelength of a radiation that can emit photoelectrons from the metal.

The work function of a metal is 2.5 eV. Light of wavelength 3600 Å is incident on this metal surface. The velocity of emitted photoelectrons will be

The work function of a metal is 2.5 eV. Light of wavelength 3600 Å is incident on this metal surface. The velocity of emitted photoelectrons will be

Work function of a photosensitive metal is 3eV. The wavelength of incident radiations which can just eject photoelectrons from the metal is