Name the physicist who is credited with the discovery of the Neutron. This 1932 discovery led to his winning the Nobel Prize.

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SSC CGL Previous Paper 65 (Held On: 3 March 2020 Shift 1)
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  1. J. S. Fleming
  2. Enrico Fermi
  3. Max Plank
  4. James Chadwick

Answer (Detailed Solution Below)

Option 4 : James Chadwick
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Detailed Solution

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The correct answer is option 4James Chadwick is accredited with the discovery of Neutron.

Key Points

  • James Chadwick had discovered some new neutral particles in 1930 which were emitted out by the Beryllium nucleus after it was bombarded by alpha particles.
  • Research was carried on and finally, the new neutral particle was confirmed in 1932.

Neutron:

  • It is a constituent particle of the nucleus.
  • It is a neutral particle i.e. it carries no charge.
  • Symbol: 'n' or 0n1.
Scientist Life/discoveries/achievements
J.S. Fleming 
  • English Physicist.
  • Student of JC Maxwell.
  • Invented Vacuum Tubes.
  • Gave right-hand rule.
Enrico Fermi
  • Italian American Physicist.
  • Established statistical laws nowadays known as Fermi-Dirac Statistics.
  • Particles obeying F-D statistics are known as Fermions after the name of Enrico Fermi.
  • Won Nobel Prize in 1938 for his research in radioactivity and Nuclear reactions.
Max Plank
  • Gave Quantum Theory of Modern Physics.
  • Received Nobel Prize in 1918 for his contribution to the study of Blackbody Radiation.
James Chadwick
  • British physicist.
  • Student of Ernest Rutherford.
  • Known for discovery of Neutron.
  • Was given Nobel Prize in 1935.

 

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