IF infty_0 and mu_0 are respectively, the electric permitivity and the magnetic permeability of free space in and mu the corresponding quantities in a medium, then the refractive index of the medium is

IF infty_0 and mu_0 are respectively, the electric permitivity and the

1.	IF infty_0 and mu_0 are respectively, the electric permitivity and the magnetic permeability of free space in and mu the corresponding quantities in a medium, then the refractive index of the medium is
Answer» `SQRT(MU in)/(mu_0 in_0)` `sqrt(mu in)/(mu_0 in_0)` `sqrt(mu_0 in_0)/(mu in)` `sqrt(mu mu_0)/(in in_0)` ANSWER :B