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
$ - \frac{5}{6},\frac{1}{2},\frac{1}{3}$
$ \frac{1}{2},- \frac{5}{6},\frac{1}{3}$
$\frac{1}{3},\frac{1}{2},- \frac{5}{6}$
$1,\, 1,\, 1$
The dimensions of $\frac{\alpha}{\beta}$ in the equation $F=\frac{\alpha-t^2}{\beta v^2}$, where $F$ is the force, $v$ is velocity and $t$ is time, is ..........
If the formula, $X=3 Y Z^{2}, X$ and $Z$ have dimensions of capacitance and magnetic induction. The dimensions of $Y$ in $M K S Q$ system are