Question

the energy of emitted photoelectron depends upon

Answer 1

Metals which do not become superconducting usually exhibit resistivity proportional to T2 close to zero temperature (due to electron-electron scattering which dominates over electron-phonon scattering at low enough temperature; see: Fermi liquid theory).  Extrapolating to zero temperature yields a finite intercept whose value is determined by impurity scattering--how dirty the material is.  Thus, a perfect metal with no impurities and no defects will be a perfect conductor at zero temperature (which is a distinct animal from a superconductor), but such an object doesn't exist in the real world.

Answer 2

Explanation:

Maximum kinetic energy of the photoelectrons emitted  K.E_{max} = hv-∅

where ϕ is the work function of the metal, ν is the frequency of the incident photon.

Wavelength of the incident photon lamda=v/c​  

 

Thus kinetic energy of the emitted photoelectrons depends on wavelength, frequency of the incident photon and work function of the metal but does not depend on the intensity.