Question

The wavelength of an xray photon is 3.0*10^-10. What is the energy in J?work function for tungsten is 4.58 eV. What is the KE of electrons emitted when the light of wavelength 400 nm is incident on a tungsten surface?  photon emitted when a hydrogen atom undergoes a transition from the n = 5 state to the n = 1 state is approximately? What is the energy when it is n=3 and n=2?

Answer 1