Question

If ${\epsilon }_0$ and ${\mu }_0$ are respectively, the electric permittivity and magnetic permeability of free space, $\epsilon$ and $\mu$ the corresponding quantities in a medium, the refractive index of the medium is

• A. $\frac{\sqrt{\mu \in }}{{\mu }_0{\in }_0}$
• B. $\sqrt{\frac{\mu \in }{{\mu }_0{\in }_0}}$
• C. $\frac{\sqrt{{\mu }_0{\in }_0}}{\mu \in }$
• D. $\frac{\sqrt{\mu {\mu }_0}}{\in {\in }_0}$

Answer 1

The correct option is B $\sqrt{\frac{\mu \in }{{\mu }_0{\in }_0}}$

$R.I=\frac{C_0}{C}=\sqrt{\frac{\mu \in }{{\mu }_0{\in }_0}}=$