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Question: Answered & Verified by Expert
J.J. Thomson's cathode ray tube experiment demonstrated that
PhysicsAtomic PhysicsJIPMERJIPMER 2010
Options:
  • A cathode rays are streams of negatively charged ions
  • B all the mass of an atom is essentially in the nucleus
  • C the $e / m$ of electrons is much greater than the $e / m$ of protons
  • D the $e / m$ ratio of the cathode ray particles changes when a different gas is placed in the discharged tube
Solution:
2712 Upvotes Verified Answer
The correct answer is: the $e / m$ of electrons is much greater than the $e / m$ of protons
According to J.J. Thomson's cathode ray tube experiment, the $e / m$ of electrons is much greater than the $e / m$ of protons.

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