if the surface of a metal is successfully exposed to rediation of `lamda _(1)=350 nm and lamda_(2)=450` nm th miximum velocity velocity of protoelectrons will differ by a factor 2 . The work function of this metal is :

Surface of certain metal is first illuminated with light of wavelength lambda_(1)=350 nm and then, by light of wavelength lambda_(2)=540 nm. It is found that the maximum speed of the photo electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to : (Energy of photon =(1240)/(lambda("in nm"))Ev

Surface of certain metal is first illuminated with light of wavelength lambda_(1)=350 nm and then, by light of wavelength lambda_(2)=540 nm. It is found that the maximum speed of the photo electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to : (Energy of photon =(1240)/(lambda("in nm"))Ev

Lights of wavelenths lambda_(1)=340nm and lambda_(2)=540nm are incident on a metallic surface. If the ratio of the maximum speeds of electrons ejected is 2, the work function of the metal is

Lights of wavelenths lambda_(1)=340nm and lambda_(2)=540nm are incident on a metallic surface. If the ratio of the maximum speeds of electrons ejected is 2, the work function of the metal is

Photon of energy 2.0 eV and wavelength lamda fall on a metal plate and release photoelectrons with a maximum velocity v. By decreasing lamda by25% the maximum velocity of photoelectrons is doubled .The work function of the material of the metal plate in eV is

When the incident wavelengths are lamda and lamda//2 the kinetic energies of the emitted photo electrons are E and 2E. The work function of the metal is

When the incident wavelengths are lamda and lamda//2 the kinetic energies of the emitted photo electrons are E and 2E. The work function of the metal is