In a particular crystalline medium the relative permittivity and permeability are εr=4.0 and μr=2.5, respectively.
(i) Determine the speed of electromagnetic waves in this medium.
(ii) A pulse generated in the medium has a time period of 2.0ns. Calculate its (a) frequency, (b) angular frequency, (c) wavelength and (d) wave number within the medium.
(iii) If the peak magnetic field in the pulse is 1.5×10−7T, find the corresponding peak electric field amplitude, quoting any relation you use.