Light of frequency 6.0×1014Hz enters a non-conducting medium having relative permittivity εr=4.0 and relative permeability μr=1.0.
a. (i) Calculate the speed of the wave in the medium.
b. (ii) Determine its wavelength inside the medium.
c. (iii) If the electric field amplitude inside the medium is 5.0Vm−1, find the magnetic field amplitude there.