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प्रश्न
What is the difference between the density and relative density of a substance ?
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उत्तर
| Density | Relative density |
| The density of a material is its mass per unit volume. | Relative density of a substance is the ratio of density of a substance to the density of water. |
| `ρ = m/V` | `RD = "ρsubstance"/"ρwater"` |
| SI unit of density is kg/m3. | Relative density is a dimensionless quantity. |
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