Nuclei · Class 12 · CBSE · Science Physics

In a nuclear reaction, the mass of the products is less than the mass of the reactants by 0.02 ext{ u}. The energy released in this reaction is appro…

Practice question from Nuclei (Class 12 · CBSE · Science Physics), with the correct answer and a step-by-step solution.

easy · MCQ · Q-4964CB

In a nuclear reaction, the mass of the products is less than the mass of the reactants by 0.02extu0.02 ext{ u}. The energy released in this reaction is approximately:

  1. A.9.31 MeV9.31\text{ MeV}
  2. B.18.62 MeV18.62\text{ MeV}Correct answer
  3. C.1.86 MeV1.86\text{ MeV}
  4. D.931 MeV931\text{ MeV}

Solution

Energy equivalent to 1 u1\text{ u} of mass defect is approximately 931.5 MeV931.5\text{ MeV}. Thus, for a mass defect Δm=0.02 u\Delta m = 0.02\text{ u}, the energy released is E=0.02×931.5 MeV≈18.63 MeVE = 0.02 \times 931.5\text{ MeV} \approx 18.63\text{ MeV}.

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