The dimensions $\left[ MLT ^{-2} A ^{-2}\right]$ belong to the :

Dimension of $\frac{1}{\mu_0 \varepsilon_0}$ should be equal to

$A$ and $B$ possess unequal dimensional formula then following operation is not possible in any case:-

If Surface tension $(S)$, Moment of Inertia $(I)$ and Planck’s constant $(h)$, were to be taken as the fundamental units, the dimensional formula for linear momentum would be

Which one has the dimensions different from the remaining three

If time $(t)$, velocity $(u)$, and angular momentum $(I)$ are taken as the fundamental units. Then the dimension of mass $({m})$ in terms of ${t}, {u}$ and ${I}$ is