NEET Physics Mass-Energy Relation Assertion Reason Question
Assertion (A): The mass of a nucleus is always less than the sum of the masses of its individual nucleons.
Reason (R): This mass difference, known as mass defect, is due to the nuclear binding energy that holds the nucleus together.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
The mass defect arises because the nuclear binding energy causes the nucleus to have less mass than the sum of its nucleons, as explained by the mass-energy relation.
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