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The mass of a body is measured as M kg on Earth. If it is taken to a planet whose radius is half that of the Earth, the mass of the body will be
A2M
B4M
CM/4
DM
Answer & Solution
Correct answer: D. M
1. Mass is the quantity of matter in a body, a fixed basic property.
2. It does not depend on the planet, its radius, or the local gravity.
3. So the mass stays M kg on the new planet.
4. Rule out 4M: that confuses mass with weight, which does change with g.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 1 "Laws of Motion", p.20_
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