A physical quantity is measured and its value is found to be $nu$ where $n = $ numerical value and $u = $ unit. Then which of the following relations is true
Unit of stress is
If ${u_1}$ and ${u_2}$ are the units selected in two systems of measurement and ${n_1}$ and ${n_2}$ their numerical values, then
In a particular system the units of length, mass and time are chosen to be $10\;cm , 10 \;g$, and $0.1\;s$ respectively. The units of force in this system will be equal to?
which of the following is not an unit of Length?