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MMLU / Characteristic X rays, appearing as sharp lines on a continuous background, are…

Problem

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question

Characteristic X rays, appearing as sharp lines on a continuous background, are produced when high-energy electrons bombard a metal target. Which of the following processes results in the characteristic X rays?

choices

  1. Electrons producing Čerenkov radiation
  2. Electrons colliding with phonons in the metal
  3. Electrons filling inner shell vacancies that are created in the metal atoms
  4. Electrons combining with protons to form neutrons

subject

college_physics

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