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AP EAMCET202017 Sep 2020Morning ShiftPhysicsAtomic PhysicsActual

Frank and Hertz experiment proves that

Options

  1. Alight moves in the form of waves as well as particles
  2. Bthe electron does not radiate energy, while moving in an orbit
  3. Cthe energy states of an atom are quantised
  4. Dthe whole of the positive charge of the atom is concentrated in the nucleus

Correct answer

C. the energy states of an atom are quantised

Step-by-step solution

Frank an Hertz's experiment demonstrated the existence of excited states in mercury atoms. It confirms the prediction of quantum theory that electrons occupy only discrete, quantised energy states.

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