Which one of the following statements about the mass of a body is corr

Which one of the following statements about the mass of a body is correct ?

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It changes from one place to another

It is same everywhere

It depends on its shape

It does not depend on its temperature

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC NDA-1 – 2018

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Statement B is correct. Mass is a fundamental property of a body that represents the amount of matter it contains. It is an intrinsic property and remains the same regardless of the body’s location (where gravity varies) or its shape.

– Mass is distinct from weight, which is the force of gravity acting on a mass and therefore changes with location.
– Mass is invariant under changes in location, shape, or phase (in a classical context).

Statement A is incorrect as it describes weight, not mass. Statement C is incorrect; mass depends on the amount of matter, not its arrangement (shape). Statement D is also correct in a classical physics context, as temperature changes (which represent changes in internal energy) cause only negligible changes in mass according to E=mc^2, which are typically ignored unless dealing with nuclear reactions or extremely high energies. However, B is a more fundamental and universally applicable definition when comparing mass to variables like location. Since only one option can be chosen, B is the most definitive correct statement about mass.

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