Nuclear Physics

Q: Radioactivity was discovered by

(a) :  Becquerel
(b) :  Marie Curie
(c) :  Pierre Curie
(d) :  All of these
(e) :  None of these
Answer:  All of these
Explanation:  

Q: Neutron was discovered by

(a) :  Rutherford in 1920
(b) :  Chadwick in 1932
(c) :  Bohr in 1913
(d) :  Compton in 1927
(e) :  None of these
Answer:  Chadwick in 1932
Explanation:  

Q: In Wilson cloud chamber, β-particles leave

(a) :  No tracks
(b) :  Thin and discontinuous tracks
(c) :  Thick and discontinuous tracks
(d) :  Thick and continuous tracks
(e) :  None of these
Answer:  Thin and discontinuous tracks
Explanation:  

Q: When fission reaction takes place in the atom of uranium, then an energy is produced at the rate of:

(a) :  200 MeV
(b) :  200 MeV per nucleon
(c) :  10 MeV per nucleon
(d) :  10 eV per nucleon
(e) :  10 keV per nucleon
Answer:  200 MeV per nucleon
Explanation:  

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