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Matter in Our Surroundings — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
Question
What is meant by density?
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Answer

The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is $\rho$ (The lower case Greek letter rho), although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume:
$\rho=\frac{\text{m}}{\text{V}}$

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