Question

The electromagnetic waves travel in a medium at a speed of 2.0 × 10⁸ m/s. The relative permeability of the medium is 1.0. The relative permittivity of the medium will be: 

(A) 2.25 

(B) 4.25 

(C) 6.25 

(D) 8.25

Answer 1

Correct option is (A) 2.25