Question: Dimensions of $\frac{1}{\mu_{0} \in_{0}}$, where symbols have their usual meaning, are-
$\left[\mathrm{L}^{-1} \mathrm{~T}\right]$
$\left[\mathrm{L}^{2} \mathrm{~T}^{2}\right]$
$\left[\mathrm{L}^{2} \mathrm{~T}^{-2}\right]$
$\left[\mathrm{LT}^{-1}\right]$
Correct Option: , 3
Solution:
