Photoelectric Effect | How to Calculate Work Function of a Metal

A metal was exposed to photons at a frequency of 2.0 x 1015Hz, and electrons were emitted with a maximum kinetic energy of 4.00 x 10-19 J. Calculate the work function, of this metal. Solution We can now apply the formula for the work function that says Φ = hf + K.E Thus, we now have Φ = (6.6x10-34) x (2.0 x 1015) + (4.00 x 10-19) Therefore, our work function, Φ = 1.72 x 10-18 J Visit https://physicscalculations.com and see more examples