The dimensions of $\left(\frac{ B ^{2}}{\mu_{0}}\right)$ will be.
(if $\mu_{0}$ : permeability of free space and $B$ : magnetic field)
$\left[ ML ^{2} T ^{-2}\right]$
$\left[ ML T ^{-2}\right]$
$\left[ ML ^{-1} T ^{-2}\right]$
$\left[ ML ^{2} T ^{-2} A ^{-1}\right]$
The dimensions of surface tension are
Dimensional formula of velocity of sound is
The frequency of vibration of string is given by $\nu = \frac{p}{{2l}}{\left[ {\frac{F}{m}} \right]^{1/2}}$. Here $p$ is number of segments in the string and $l$ is the length. The dimensional formula for $m$ will be
$Assertion$ : Specific gravity of a fluid is a dimensionless quantity.
$Reason$ : It is the ratio of density of fluid to the density of water
$Pascal-Second$ has dimension of