Physics-
General
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Question

Statement 1: Energy is released in nuclear fission

Statement 2: Total binding energy of the fission fragments is larger than the total binding energy of the parent nucleus

  1. Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1

  2. Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1

  3. Statement 1 is True, Statement 2 is False

  4. Statement 1 is False, Statement 2 is True

The correct answer is:

Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1


    In a nuclear fission, when a bigger nucleus is fissioned into two light weight nuclei, then due to mass defect some energy is released. According to concept of binding energy, fission can occur because the total mass energy will decrease; that is ΔE subscript bn  (binding energy)will increase.Wsee that for high mass nuclide ,  (A=240), the binding energy per nucleon is about 7.6MeV/nucleon. For the middle weight nuclides  (A = 120) , it is about 8.5 MeV/nucleon. Thus, binding energy of fission fragments is larger than the total binding energy of the parent nucleus

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