Question

Give some examples of derived quantity and base quantity

Answer 1

                                             derived quantity

reciprocal metre: m−1 wavenumber, optical power, curvature, spatial frequency

kilogram per square metre: kg/m2 area density

kilogram per cubic metre: kg/m3 density, mass density

cubic metre per kilogram: m3/kg specific volume

                                                 base quantity

The SI has recognised 7 quantities as base quantities and defined their base units as: metre, kilogram, second, ampere, Kelvin, mole and candela