Question

If the relative permeability and dielectric constant of a given medium are equal to μ_r and K respectively, then the refractive index of the medium is equal to __________.

(A) √(μ_rK)

(B) √(μ_rE_o)

(C) √(μ_oE_o)

(D) [1 / √(μ_rK)]

Answer 1

The correct option is  (A) √(μ_rK).

Explanation:

Refractive index = n = (c/v) = √(μ_rE_r) = √(μ_rK)