Properties of sound
Properties of sound Sound is propagated in the form of a wave of vibrations which moves away from the source. Vibration as we know is an oscillators motion which repeats itself after a fixed interval of time. Like any other oscillatory motion, sound has the following properties: amplitude, time period, and frequency Amplitude We know that sound is propagated by vibrations in the particles of medium about a mean position. The maximum distance moved by the particles of the medium on either side of the mean position represents the amplitude of sound. Time period Time period of a sound wave refers to the time taken by a particle of the medium to complete one vibration. Time period is measured in seconds (s) Frequency The number of oscillations completed by the air particles in one second is called the frequency of vibrations. The frequency is expressed in hertz (H2). A frequency of 50 Hz represents 50 oscillations in a second. An increase in...