if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength

The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength, will be : if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength The critical angle of a medium for a specific wavelength will be September 23, [...]