NEET Physics Mass-Energy Relation Assertion Reason Question
Assertion (A): The nuclear mass is always less than the total mass of its constituents.
Reason (R): According to Einstein’s mass-energy relation, mass is another form of energy, and the mass defect accounts for the binding energy of the nucleus.
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 nuclear mass being less than the sum of its constituents is due to the mass defect, which is explained by the mass-energy equivalence that relates the mass defect to binding energy.
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