Photoelectric Effect Quantum interpretation Quantum interpretation  If the energy of a photon is less than the work function , the photon cannot give enough energy to the electron to leave the surface  K max does not depend on light intensity, because doubling the number of photons would only double the number of electrons and not double their energy  K max increases with frequency because energy and frequency are related  If light is particle-like, then all of the energy will be delivered instantaneously thus liberating an electron with no time delay between the light hitting the surface and the electron escaping
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