CBSE Class 12 Physics 2023 Outside Delhi Set 1 Paper

Question : 12 of 35

Marks: +1, -0

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

Solution:

A nucleus becomes stable when its binding energy per nucleon is around

8 {\MeV}

. The peak indicates the binding energy per nucleon of He element is closer to

8 {\MeV}

. Binding energy per nucleon of

{\He}

in actually

7.1 {\MeV}

. So, it is stable than its neighbours.

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