Question

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