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1Transverse waves- Transverse waves are waves in which the vibrations of the particles or medium in which the wave travels are at a right angles to the direction in which the wave travels. Longitudinal waves- Longitudinal waves are waves that wave in which the vibrations of the particles or medium in which the wave travels are in the same direction as to that in which the wave travels.Frequency of waves is measure of the number of waves made by a source each second.The frequency is measured in Hz (Hertz)