Physics · Dual Nature of Radiation and Matter
Consider a beam of electrons, each with kinetic energy E0, incident on a metal surface kept in an evacuated chamber. Which of the following statements is true regarding electron emission from the metal surface?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Electrons can be emitted with a continuous spectrum of kinetic energies up to a maximum of E0.✓
- 2Electrons can be emitted with any kinetic energy up to a maximum of E0 - φ (where φ is the work function).
- 3Electrons can be emitted, but all of them will possess exactly the same kinetic energy, E0.
- 4No electrons will be emitted as only photons can cause electron emission.
Correct answer
Electrons can be emitted with a continuous spectrum of kinetic energies up to a maximum of E0.
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