If ${E}, {L}, {m}$ and ${G}$ denote the quantities as energy, angular momentum, mass and constant of gravitation respectively, then the dimensions of ${P}$ in the formula ${P}={EL}^{2} {m}^{-5} {G}^{-2}$ are
$\left[{M}^{0} {L}^{1} {T}^{0}\right]$
$\left[{M}^{-1} {L}^{-1} {T}^{2}\right]$
$\left[{M}^{1} {L}^{1} {T}^{-2}\right]$
$\left[{M}^{0} {L}^{0} {T}^{0}\right]$
$M{L^{ - 1}}{T^{ - 2}}$ represents
If electronic charge $e$, electron mass $m$, speed of light in vacuum $c$ and Planck 's constant $h$ are taken as fundamental quantities, the permeability of vacuum $\mu _0$ can be expressed in units of
The dimensions of physical quantity $X$ in the equation Force $ = \frac{X}{{{\rm{Density}}}}$ is given by
A gas bubble from an explosion under water oscillates with a period proportional of $P^a\,d^b\,E^c$ where $P$ is the static pressure, $d$ is the density of water and $E$ is the energy of explosion. Then $a,\,b$ and $c$ are