Define density.

(a) Write down an equation that defines density . (b) 5 kg of meterial A occupy 20 cm ^(2) whereas 20 kg of material B occupy 90 cm^(2) .Which has the greater density : A or B

Define identity element for a binary operation defined on a set.

Define relative density

Define polarization density.

Choose the correct option, which defines Relative density.

Define the term density. Give its units and dimensions.

If relative density of a substance is K then the density of that substance is

Assertion (A) : Physiological density is preferable to arithmetic density as an index of population density. Reason ( R) : Physiological density is based on arable land while arithmetic density is based on total area.