What is density?
What is relative density?
What is the SI unit of density?छठी कक्षा में असफल होने पर सांत्वना देते हुए अपने छोटे भाई को पत्र लिखिए।
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The mass density (ρ) of a substance is the mass of one unit volume of the substance. ... The relative density is the ratio of the mass of the substance in air at 20 °C to that of an equal volume of water at the same temperature.
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