STANDARD Physics Binding Energy Multiple Correct Question
Mass numbers of the elements A, B, C and D are 30, 60, 90 and 120 respectively. The specific binding energy of them are 5 MeV, 8.5 MeV, 8MeV and 7 MeV respectively. Then, in which of the following reaction/s energy is released? (i) D → 2B (ii) C → B + A (iii) B → 2A
(i) D → 2B
(ii) C → B + A
(iii) B → 2A
Correct Answer
Detailed Explanation
Energy is released in a nuclear reaction if the products have a higher binding energy per nucleon than the reactants. In reaction (i), the binding energy per nucleon increases from 7 MeV to 8.5 MeV, releasing energy.
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