The electromagnetic waves having speed 2.5 x 10^4 m/s are travelling in a medium of relative permeability 0.8. The relative permittivity of the medium is The electromagnetic waves having speed 2.5 x 10^4 m/s are travelling in a medium of relative permeability 0.8. The relative permittivity of the medium is September 4, 2021 Category: Chapter 8 - Electromagnetic Waves , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related