For a nucleus to be stable, the correct relation between neutron number N and Proton number Z is

(1) N > Z             

(2) N = Z 

(3) N < Z             

(4) NZ

Subtopic:  Mass-Energy Equivalent |
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Mn and MP represent mass of neutron and proton respectively. If an element having atomic mass M has N-neutron and Z-proton, then the correct relation will be

(1) M<NMn+ZMp         

(2) M>NMn+ZMp

(3) M=NMn+ZMp         

(4) M=NMn+Mp

Subtopic:  Mass-Energy Equivalent |
 81%
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If a H2 nucleus is completely converted into energy, the energy produced will be around

(1) 1 MeV               

(2) 938 MeV

(3) 9.38 MeV           

(4) 238 MeV

Subtopic:  Mass-Energy Equivalent |
 78%
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As compared C12 atom, C14 atom has

(1) Two extra protons and two extra electrons

(2) Two extra protons but no extra electrons

(3) Two extra neutrons and no extra electrons

(4) Two extra neutrons and two extra electrons

Subtopic:  Mass-Energy Equivalent |
 65%
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If m, mn and mp are the masses of XAZ nucleus, neutron and proton respectively 

(1) m<A-Zmn+Zmp       

(2) m=A-Zmn+Zmp

(3) m=A-Zmp+Zmn        

(4) m>A-Zmn+Zmp

Subtopic:  Mass-Energy Equivalent |
 83%
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On the bombardment of neutron with Boron. α-particle is emitted and product nuclei formed is

(1) C126         

(2) Li63

(3) Li73           

(4) Be94

Subtopic:  Mass-Energy Equivalent |
 66%
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The average kinetic energy of the thermal neutrons is of the order of 

(1) 0.03 eV         

(2) 3 eV 

(3) 3 KeV           

(4) 3 MeV

Subtopic:  Mass-Energy Equivalent |
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Which of the following isotopes is normally fissionable ?

(1) U23892             

(2) Np23993

(3) U23592             

(4) He42

Subtopic:  Mass-Energy Equivalent |
 60%
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The process by which a heavy nucleus splits into light nuclei is known as 

(1) Fission           

(2) α-decay

(3) Fusion             

(4) Chain reaction

Subtopic:  Mass-Energy Equivalent |
 89%
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The explosion of the atomic bomb takes place due to

1. Nuclear fission           

2. Nuclear fusion

3. Scattering               

4. Thermionic emission

Subtopic:  Mass-Energy Equivalent |
 79%
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