If the work function of a metal is 4.51 eV, what is the maximum wavelength of light that can be used to observe the photoelectric effect?
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The photoelectric effect is an electron-emitting phenomenon on a metal surface upon exposure to a photon. Assume the energy required to emit one electron from a metal surface would be . Determine the maximum wavelength of photons that can initiate the photoelectric effect.
Physical chemistry III
Consider the photoelectric effect using a tungsten metal surface. The work function for W (tugnsten) is gvien as 4.52 eV.
a) Calculate the longest wavelength of light that is capable of ejecting elctrons from the W surface and give it in nm.
b) Calculate the maximum kinetic energy of electrons emitted for a W surface using monochromatic light of a wavelenght of 240 nm and give it in units of J.
c) Calculate the stopping voltage of the electrons considered in part b