Sections
Key Equations

# Key Equations

 quantum energy $E=nhfE=nhf$
 energy of a photon $E=hfE=hf$ maximum kinetic energy of a photoelectron $KEe=hf−BEKEe=hf−BE$ binding energy of an electron $BE=hfOBE=hfO$
 momentum of a photon (deBroglie relation) $p=hλp=hλ$