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Gravitation — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceGravitation5 Marks
Question
Define relative density of a solid. State its unit. How is it related to its density$?$ Write mathematical expression for relative density. What conclusion do you draw if relative density of a substance is $(a)$ greater than $1,\ (b)$ less than $1$ and $(c)$ equal to $1?$
✓

Answer

Relative density refers to the ratio of the density of a substance to the density of water. $\text{Relative Density}=\frac{\text{Density of a substance}}{\text{Density of water}}$
  1. Greater than 1: If the relative density is greater than $1,$ that means that the density of a substance is greater than the density of water.
  2. Less than 1: If the relative density is less than $1,$ that means that the density of a substance is less than the density of water.
  3. Equal to 1: If the relative density is equal to $1,$ that means that the density of a substance is equal to the density of water.

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