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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Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic metre.
Relative density, or specific gravity, is the ratio of the density of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest; for gases, the reference is air at room temperature.
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