Energy of an incident photon
A photon of wavelength 250 nanometres is incident on a zinc surface. Zinc has a work function of 4.33 eV. Using the data given calculate the maximum kinetic energy after the electron has absorbed the photon and has been released from the metal. h=6.6310^-34 c=310^8 m/s e=1.6*10^-19 C
Calculate a value in Joules.