Structure of the Atom · Class 9 · CBSE Science
Which of the following subatomic particles was discovered by J.J. Thomson through the cathode ray discharge tube experiment?
Practice question from Structure of the Atom (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.
easy · MCQ · Q-C4A757
Which of the following subatomic particles was discovered by J.J. Thomson through the cathode ray discharge tube experiment?
- A.Proton
- B.ElectronCorrect answer
- C.Neutron
- D.Alpha particle
Solution
J.J. Thomson discovered the electron in 1897 by identifying negatively charged particles (cathode rays) emitted from the cathode in a discharge tube.
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