To generate a power of 3.2 mega watt, the number of fissions of U235 per minute is
(Energy released per fission = 200MeV, 1eV=1.6×10-19 J 

(a) 6×1018         (b) 6×1017
(c) 1017              (d) 6×1016

Concept Questions :-

Mass-energy equivalent
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The average number of prompt neutrons produced per fission of U235 is 
(a) More than 5          (b) 3 to 5
(c) 2 to 3                   (d) 1 to 2

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Mass-energy equivalent
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In the nuclear reaction: Xn, α 3Li7 the term X will be 3

(a) B510            (b) B59
(c) B511            (d) He24

Concept Questions :-

Types of decay
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In an atomic bomb, the energy is released due to

(a) Chain reaction of neutrons and U92235
(b) Chain reaction of neutrons and U92288
(c) Chain reaction of neutrons and P92240
(d) Chain reaction of neutrons and U92286

Concept Questions :-

Mass-energy equivalent
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If an electron and a positron annihiliate, then the energy released is 
(a) 3.2×10-13 J        (b) 1.6×10-13 J
(c) 4.8×10-13 J           (d)  6.4×10-13 J

Concept Questions :-

Mass-energy equivalent
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The energy liberated on complete fission of 1 kg of U92235 is (Assume 200 MeV energy is liberated on fission of 1 nucleus) 
(a) 8.2×1010 J                           (b) 8.2×109 J
(c) 8.2×1013 J                           (d) 8.2×1016 J

Concept Questions :-

Mass-energy equivalent
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The nuclear reaction H12+H12He24 (mass of deuteron = 2.0141 a.m.u. and mass of He = 4.0024 a.m.u.) is

(a) Fusion reaction releasing 24 MeV energy
(b) Fusion reaction absorbing 24 MeV energy
(c) Fission reaction releasing 0.0258 MeV energy
(d) Fission reaction absorbing 0.0258 MeV energy

Concept Questions :-

Mass-energy equivalent
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In the following reaction the value of ‘X’ is  
N714+He24X+H11
(a) N817              (b) O817
(c) O716              (d) N716

Concept Questions :-

Radioactivity
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Which of the following are suitable for the fusion process

(a) Heavy nuclei         (b) Light nuclei
(c) Atom bomb           (d) Radioactive decay

Concept Questions :-

Radioactivity
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A deutron is bombarded on O816 nucleus and α-particle is emitted. The product nucleus is 
(a) N713           (b) B510
(c) Be49           (d) N714

Concept Questions :-

Types of decay
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