Distinguish between density and relative density.
1. It is the ratio of mass to volume.
|It is the ratio of the density of a substance to the density of water.|
|2. Units are g `cm^-3` or kg `m^-3`||It is a pure quantity. It has no units.|
|3. Density in kg ` m^-3`=R.D × 1000||
R.D = Density in g `cm^-3`
R.D=`("Density in kg" cm^-3)/1000`
Concept: Buoyancy Force (Upthrust Force)
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