Same chapter3 marksDifficulty: Medium
A body weighs 50 gf in air and 30 gf when fully immersed in water. Find the upthrust, the volume of the body and its relative density.
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3 marksDifficulty: Medium
The relative density of a substance is 2.5. What is its density in kg m−3, and will it float on water?
Original Khojo Papers practice question — not from a past board paper.
Answer
2,500 kg m−3, and it will sink.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Relative density is the density of the substance divided by that of water, so the density is 2.5 × 1,000 = 2,500 kg m−3. Being denser than water, the substance sinks.
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