Question

A plane electromagnetic wave E = 100cos(6 x 10'146) V/m propagates
in a medium. Find the refracitive index of the medium.​

Answer 1

Answer:

Explanation:

Explanation:

Let refractive index be n

from wave equation comparing with E = Eo cos(ωt + kx) we get,

ω = 6 × 108  and     k = 4

using relation, ω = (kc / n)  we get n = (kc / ω)

Hence n = [(4 × 3 × 108) / (6 × 108)] = (12/6) = 2