CBSE Class 12 Physics 2023 Outside Delhi Set 1 Paper

Question : 12

Total: 35

The curve of binding energy per nucleon as a function of atomic mass number has a sharp peak for helium nucleus. This implies that helium nucleus is

radioactive
unstable
easily fissionable
more stable nucleus than its neighbours

Solution: 👈: Video Solution

A nucleus becomes stable when its binding energy per nucleon is around 8‌MeV. The peak indicates the binding energy per nucleon of He element is closer to 8‌MeV. Binding energy per nucleon of He in actually 7.1‌MeV. So, it is stable than its neighbours.

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