Class 12PhysicsDual Nature of Radiation and MatterEinstein's Photoelectric Equation and Energy Quantum of Radiation
DifficultWhat is zero-point energy or Fermi energy?
(N/A) Zero-point energy is the lowest possible energy that a quantum mechanical physical system may have. Unlike in classical mechanics,quantum systems fluctuate even in their ground state. For a gas of fermions,the energy of the highest occupied state at absolute zero temperature $(0 \ K)$ is called the Fermi energy $(E_F)$.
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When the work function of a metal increases,the maximum kinetic energy of the emitted photoelectrons:
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