Define density .Write its unit and dimensional formula.

1.	Define density .Write its unit and dimensional formula.
Answer» Solution :MASS per unit volume of body is called DENSITY. If mass of body is M and volume V then density `rho=("Mass M")/("Volume V")` Density is a scalar quantity. Density is always POSITIVE. Si unit of density is : `kg//m^(3)` CGS unit of density : `g//cm^(3)` Dimensional formula of density : `M^(1)L^(-3)T^(0)`. (Primarily liquids are incompressible and at any pressure its density does not change . It remains constant . GASES are compressible and density LARGELY varies with pressure.)

Discussion