Given below are two statements: one is labell | vedclass

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(D) The binding energy per nucleon curve shows that for nuclei with mass numbers between $30$ and $170$, the binding energy per nucleon is nearly cons

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Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.

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(D) The binding energy per nucleon curve shows that for nuclei with mass numbers between $30$ and $170$, the binding energy per nucleon is nearly constant (approximately $8 	ext{ MeV}$ per nucleon).This happens because the nuclear force is short-ranged, meaning a nucleon only interacts with its nearest neighbors.As the mass number increases, the number of neighbors remains effectively constant for a given nucleon, making the binding energy per nucleon independent of the total number of nucleons.Therefore, both the Assertion and the Reason are true, and the short-range nature of the nuclear force is the reason for the saturation of binding energy per nucleon.

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