Properties of electromagnetic waves
Properties of electromagnetic wavesCommon propertiesi. They do not require a material medium and can travel through a vacuum.ii. They undergo reflection, refraction and diffraction.iii. All electromagnetic waves travel at the speed of light i.e. 3 × 108 ms-1.iv. They carry no electric chargev. They transfer energy from a source to a receiver in the form of oscillating electric and magnetic fields.vi. They obey the wave equation (v = λ f).Examples1. A VHF radio transmitter broadcasts radio waves at a frequency of 30 M Hz. What is their wavelength?Solutionv = f λ => then λ = v / f =#( 3.0 xx10^8) / (300 × 10^6)# = 1.00 m.2. Calculate the frequency of a radio wave of wavelength 150m.Solutionv = f λ =>f = v / λ = #2.0 × 10^6# =2 M Hz.