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Gravitation — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceGravitation2 Marks
Question
Define relative density. What is the SI unit of relative density?
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Answer

Relative density: Relative density of a substance is the ratio of its density to that of water.Relative density of substance $=\frac{\text{Density of substance}}{\text{Density of water}}$
Relative density has no units as it is a ratio of two similar quantities.

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