Modern Physics Chapter 5
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Questions and Answers

What is the primary mechanism by which photons are produced?

  • Electron recombination
  • Spontaneous emission
  • Stimulated absorption
  • Induced emission (correct)

    • What is the fundamental principle underlying stimulated emission?

  • Heisenberg's uncertainty principle
  • Conservation of momentum
  • Conservation of energy (correct)
  • Pauli's exclusion principle

    • Which of the following best describes the process of stimulated emission?

  • A photon is absorbed, and an electron moves to a higher energy level
  • An electron is emitted, and a photon is absorbed
  • A photon is emitted, and an electron moves to a higher energy level
  • An electron moves to a lower energy level, and a photon is emitted (correct)

    • What is the term for the process by which an excited atom releases a photon spontaneously?

    <p>Spontaneous emission</p> Signup and view all the answers

    What is the significance of the principle of energy conservation in stimulated emission?

    <p>It ensures that the energy of the emitted photon is equal to the energy of the incident photon</p> Signup and view all the answers

    Which of the following statements is true about induced emission?

    <p>It is a stimulated process</p> Signup and view all the answers

    What is the term for the process by which an electron moves to a lower energy level and emits a photon?

    <p>Radiative recombination</p> Signup and view all the answers

    Which of the following is NOT a characteristic of stimulated emission?

    <p>It is a spontaneous process</p> Signup and view all the answers

    What is the significance of Figure 5.3 in the context of stimulated emission?

    <p>It shows the energy levels involved in induced emission</p> Signup and view all the answers

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