Biophysics and Cathode Ray Tubes Quiz
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Questions and Answers

What is the purpose of the cathode ray tube in this experiment?

  • To determine the amplitude, periodic time, and frequency of given waves (correct)
  • To create a vacuum for studying electron behavior
  • To emit a beam of electrons for visual observation
  • To measure the pressure of the gas inside the tube

    • What is the pressure of the gas inside the cathode ray tube?

  • 760 mmHg
  • 0.01 mmHg (correct)
  • 0.1 mmHg
  • 1 atm

    • How is the bright spot on the fluorescent screen created?

  • By applying a high voltage to the screen
  • A beam of electrons controlled and focused by the electron gun (correct)
  • By heating the fluorescent material with a laser
  • By exposing the screen to ultraviolet light

    • What determines the color of the light emitted by the fluorescent material?

    <p>Kind of the coating (fluorescent material) and the energy of the falling electrons</p> Signup and view all the answers

    What is the function of the deflecting system in the cathode ray tube?

    <p>To deflect the beam of electrons</p> Signup and view all the answers

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