Who among the following discovered Proton ?
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EPFO AO EO 2021
J.J. Thomson
Incorrect AnswerE. Goldstein
Incorrect AnswerE. Rutherford
Correct AnswerJ. Chadwick
Incorrect AnswerExplanation:
- Option 1: J.J. Thomson
- He discovered the electron, not the proton.
- Option 2: E. Goldstein
- He discovered canal rays (positive rays), which indicated the presence of positively charged particles, but he did not actually discover the proton.
- Option 3: E. Rutherford
- Correct Answer!
- He discovered the proton in 1917 through his gold foil experiments and later by observing hydrogen nuclei.
- Option 4: J. Chadwick
- He discovered the neutron, not the proton.
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By: santosh