Frequency represents the number of complete oscillations in one second. it is measured in Hertz (Hz). Electromagnetic waves are waves which do not require a material media for transmission. They travel with a speed of light. The speed (m/s) of a wave is given by frequency (Hz) × Wavelength (m) Speed is 300,000 km/sec or 300,000,000 m/s and the wavelength is 300,000 km or 300,000,000 m. Frequency = speed÷ wavelength = 300000000 ÷ 300000000 = 1 Therefore, the frequency of the wave is 1Hz
