GEO 2025Q1
Q: An electromagnetic wave with its magnetic field B = 0.3 cos(ky − 10^8 t) î tesla is propagating in a non-magnetic dielectric medium of refractive index 2. The wavelength of the wave is
(a)6π m
(b)3π m
(c)0.3 m
(d)(2π/3) m
Answer pending verification