Will photoelectrons be emitted by copper plate of work function 4.4eV when illuminated by visible light?

Maximum kinetic energies of photoelectrons emitted from a metal surface when illuminated by radiations of wavelengths lamda_(1) and lamda_(2), " are " K_(1) and K_(2) , respectively. If lamda_(1) = 3 lamda_(2) , show that, K_(1) lt (K_(2))/(3)

Calculate the maximum kinetic energy of electrons emitted from a photosensitive surface of work function 3.2eV, for the incident radiation of wavelength 300nm.

Light from a discharge tube containing hydrogen atoms is incident on the surface of a piece of sodium . The maximum kinetic energy of the photoelectrons emitted from sodium is 0.73 eV. The work function of sodium is 1.82 eV . (ii) The quantum numbers of the two orbits in the hydrogen atom involved in emission of photons and

Light from a discharge tube containing hydrogen atoms is incident on the surface of a piece of sodium . The maximum kinetic energy of the photoelectrons emitted from sodium is 0.73 eV. The work function of sodium is 1.82 eV . (iii) the change in angular momentum of the electron of hydrogen atom in the orbits.

Light from a discharge tube containing hydrogen atoms is incident on the surface of a piece of sodium . The maximum kinetic energy of the photoelectrons emitted from sodium is 0.73 eV. The work function of sodium is 1.82 eV . Find (i) the energy of photons responsible for the photoelectric emission,

The maximum kinetic energy of photo electron emitting' from a metallic surface of work function 1.8 eV is 0.5 eV. The corresponding stopping potential is—

Work function of a metal surface is 2eV. Maximum kinetic energy of photoelectrons emitted from the surface for incidence of light of wavelength 4140 Å is 1eV. What is the threshold wavelength of radiation for that surface?

Statement I: Any light wave having frequency less than 4.8 xx 10^(14)Hz cannot emit photoelectrons from a metal surface having work function 2.0 eV Statement II: If the work function of a metal is W_(0) (in eV), then the maximum wavelength (in Å ) of the light capable of initiating photoelectric effect in the metal is given by lamda_("max") = (12400)/(W_(0))

When certain metal was irradiated with light of frequency 1.6xx10^16 Hz the photoelectrons emitted had twice the kinetic energy as did photoelectrons emitted when the same metal was irradiated with light of frquency 1xx10^16 Hz Calculate threshold frequency of the metal