Consider the following physical expressions (I) v^2( : density, v:...

Consider the following physical expressions (I) $\rho v^2(\rho$ : density, $v:$ velocity $)$ (II) $\frac{\mathrm{Y} \Delta \mathrm{L}}{\mathrm{L}}$ (Y: Young's modulus, L: length) (III) $\frac{\sigma^2}{\varepsilon_0}$ ( $\sigma$ : surface density of charge) (IV) $h \rho r$ ( $h$ : rise of a liquid in a capillary tube of radius $r$ ) The expressions having same dimensional formula are