The difference between the mass of a nucleus and its constituents is called the:
AMass defect
BMass deficit
CMass density
DMass detector
Answer & Solution
Correct answer: A. Mass defect
1. A nucleus weighs less than its separated parts.
2. That missing mass has become binding energy.
3. The difference in mass of a nucleus and its constituents is called the mass defect.
4. So the answer is the mass defect.
_Source: NCERT Class XII Physics Part II, Ch 13 'Nuclei'_
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