The size of an atom is of the order of

(a) 10-8 m         (b) 10-10 m 
(c) 10-12 m        (d) 10-14 m

 73%
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The order of the size of nucleus and Bohr radius of an atom respectively are 

(1) 10-14 m, 10-10 m              

(2) 10-10 m, 10-8 m 

(3) 10-20 m, 10-16 m               

(4) 10-8 m, 10-6 m

 81%
From NCERT
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Which of the following particles are constituents of the nucleus 

(1) Protons and electrons           

(2) Protons and neutrons

(3) Neutrons and electrons         

(4) Neutrons and positrons

 89%
From NCERT
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Nuclear binding energy is equivalent to 

(1) Mass of proton       

(2) Mass of neutron

(3) Mass of nucleus     

(4) Mass defect of nucleus

Subtopic:  Nuclear Binding Energy |
 85%
From NCERT
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If the binding energy of the deutrium is 2.23 MeV.
The mass defect given in a.m.u. is 

(1) – 0.0024           

(2) – 0.0012

(3) 0.0012               

(4) 0.0024

Subtopic:  Nuclear Binding Energy |
 70%
From NCERT
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Which of the following has the mass closest in value to that of the positron 

(1) Proton         

(2) Electron

(3) Photon         

(4) Neutrino


(1 amu = 931 MeV)

Subtopic:  Nuclear Binding Energy |
 66%
From NCERT
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Size of nucleus is of the order of

(1) 10-10 m            

(2) 10-15 m

(3) 10-12 m             

(4) 10-19 m

Subtopic:  Mass-Energy Equivalent |
 88%
From NCERT
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For effective nuclear forces, the distance should be

(1) 10-10 m         

(2) 10-13 m

(3) 10-15 m         

(4) 10-20 m

Subtopic:  Nuclear Binding Energy |
 76%
From NCERT
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The masses of neutron and proton are 1.0087 a.m.u. and 1.0073 a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particle) of mass 4.0015 a.m.u. The binding energy of the helium nucleus will be (1 a.m.u.= 931 MeV) :

(1) 28.4 MeV               

(2) 20.8 MeV

(3) 27.3 MeV               

(4) 14.2 MeV

Subtopic:  Nuclear Binding Energy |
 65%
From NCERT
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Atomic power station at Tarapore has a generating capacity of 200 MW. The energy generated in a day by this station is

(1) 200 MW               

(2) 200 J

(3) 4800×106 J          

(4) 1728×1010 J

Subtopic:  Nuclear Energy |
 68%
From NCERT
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