a
\( {[\mathrm{h}]=\mathrm{ML}^2 \mathrm{~T}^{-1}} \)

\( {[\mathrm{~L}]=\mathrm{ML}^2 \mathrm{~T}^{-1}} \)

\( {[\mathrm{P}]=\mathrm{MLT}^{-1}} \)

\( {[\tau]=\mathrm{ML}^2 \mathrm{~T}^{-2}}\)

(Here \(\mathrm{h}\) is Planck's constant, \(\mathrm{L}\) is angular momentum, \(\mathrm{P}\) is linear momentum and \(\tau\) is moment of force)