The unit of Young’s modulus is
$N{m^2}$
$N{m^{ - 2}}$
$Nm$
$N{m^{ - 1}}$
$Dyne/cm^2$ is not a unit of
Which of the following is a unit that of force?
Which of the following system of units is not based on units of mass, length and time alone
Write a note on $SI$ (System International)