The unit of Stefan's constant $\sigma $ is
$W\,{m^{ - 2}}\,{K^{ - 1}}$
$W\,{m^2}\,{K^{ - 4}}$
$W\,{m^{ - 2}}\,{K^{ - 4}}$
$W\,{m^{ - 2}}\,{K^4}$
Number of base $SI$ units is
$Newton/metr{e^{\rm{2}}}$ is the unit of
The unit of $L/R$ is (where $L$ = inductance and $R$ = resistance)
The unit of the coefficient of viscosity in $S.I.$ system is
Which of the following is not represented in correct unit