Physics - EM Waves Question with Solution | TestHub

If an optical medium possesses a relative permeability of $\frac{10}{\pi }$ and relative permittivity of $\frac{1}{0.0885}$, then the velocity of light is greater in vacuum than that in this medium by ________ times.
$({\mu }_0=4\pi \times 10^{-7}\mathrm{H}/\mathrm{m},{ϵ}_0=8.85\times 10^{-12}\mathrm{F}/\mathrm{m}$
$\mathrm{c}=3\times 10^8\mathrm{m}/\mathrm{s})$