Thermionic Emission MCQs Test and Answers pdf Download

Practice thermionic emission MCQs and physics for test prep. Free study guide has multiple choice questions (MCQ) with thermionic emission quiz as at room temperature, electron cannot escape metal surface due to with answering options attractive forces of nucleus, repulsive forces of electrons, repulsive forces of nucleus and pulling force of protons for exam preparation. Study to learn thermionic emission quiz with MCQs to find questions answers based online tests.

MCQs on Thermionic Emission

MCQ. At room temperature, electron cannot escape metal surface due to

  1. attractive forces of nucleus
  2. repulsive forces of electrons
  3. repulsive forces of nucleus
  4. pulling force of protons


MCQ. Cathode rays carry

  1. positive charge
  2. neutral
  3. negative charge
  4. positrons


MCQ. Process of emission of electrons from hot metal surface is called

  1. electronic emission
  2. thermionic emission
  3. electron capture
  4. proton loss


MCQ. Particles emitted from hot cathode surface are

  1. negative ions
  2. positive ions
  3. protons
  4. electrons


MCQ. For thermionic emission voltage applied should be of

  1. 5 V
  2. 7 V
  3. 8 V
  4. 6 V