[" 16.Electromagnetic waves travel in a medium which has relative permeability "1.3" and "],[" relative permittivity "2.14" .Speeds of electromagnetic waves in this medium will be."],[[" 1) "13.6times10^(6)m/s," 2) "1.8times10^(6)m/s," 3) "3.6times10^(8)m/s," 4) "1.8times10^(8)m/s]]