A singular green photon with a wavelength of 522

Question

A singular green photon with a wavelength of 522 (from the previous problem) strikes a metal surface and an electron is ejected with an energy equal to 2.56×10⁻¹⁹, calculate the work function of the metal.

Answer 1

The work function W_o, is the energy required to extract 1 electron, which is given, you calculate it by the formula

W_o = E= hc ÷ λ; h is Plank’s constant, 6.63 x 10^-34 J•s; c is the speed of light, 3.00 x 10⁸ m/s, use the given wavelength [λ] and verify.