If ${\varepsilon _0}$ and ${\mu _0}$ are respectively, the electric permittivity and the magnetic permeability of free space. $\varepsilon $ and $\mu $ the corresponding quantities in a medium, the refractive index of the medium is
If ${\varepsilon _0}$ and ${\mu _0}$ are respectively, the electric permittivity and the magnetic permeability of free space. $\varepsilon $ and $\mu $ the corresponding quantities in a medium, the refractive index of the medium is
- [IIT 1982]
- [AIPMT 1997]
- A
$\sqrt {\frac{{\mu \varepsilon }}{{{\mu _0}{\varepsilon _0}}}} $
- B
$\frac{{\mu \,\varepsilon }}{{{\mu _0}{\varepsilon _0}}}$
- C
$\sqrt {\frac{{{\mu _0}{\varepsilon _0}}}{{\mu \varepsilon }}} $
- D
$\sqrt {\frac{{\mu {\mu _0}}}{{\varepsilon \,{\varepsilon _0}}}} $
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