What is the SI unit of density ?(b) Define relative density. What is the SI unit of density?(b) Define relative density.
So if the temperature increases the density of air decreases and vice-versa. The density of air is inversely proportional to the temperature. How does the density of air depend on the temperature?Īns. So if the pressure increases the density of the air also increases and vice-versa. The density of air is directly proportional to the pressure. What is the relationship between the density of air and the pressure?Īns. Where, $\mathrm$ = Universal gas constant, T = Temperature of the gas.
So gasses are generally less dense than solid.įrom here we can conclude that the density is nothing but the mass occupied by the material in a unit volume and it can be represented as. We know that the atoms or molecules of gasses are much farther than that in solids. So we can say that iron is denser than raw cotton. This is because the atoms of the cotton are having a lot of gap between them but the atoms of the iron piece are closely packed. If you take the same size of raw cotton and iron piece in your hands, then you will feel that you are able to compress raw cotton but not the iron piece.