wave particle duality

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    Created by
    libby

    Cards (10)

    • photoelectric effect is evidence for what
      the particle model of light
    • photoemission
      photons of sufficient energy can eject electrons from the surface of materials
    • plates will only discharge if
      the plate is negatively charges and the source is at a high enough frequency
    • threshold frequency
      the minimum frequency of photon required for photoemission
    • work function
      the minimum energy of photon required to cause photoemission
    • wave particle duality
      situation when particle and wave like behaviours can be demonstrated
    • explain why the photoelectric effect provides evidence for the particle nature of light
      each photon removes one electron
    • What effects does decreasing the irradiance of on the maimum kinetic energy of photoelectrons ejected from the surface of the metal
      no change to the kinetic energy, as irradiance does not effect energy of photons
    • state what is meant by a work fuction of 6.9x10-19J
      6.0x10-19 joules of energy is the minimum amount of energy required to emit electrons
    • why is the photoelectric effect not due to ionisation
      it only occurs with a negatively charged plate