what is frequency?
The number of wave of sound in one second is call frequency.
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The frequency of sound waves is measured in hertz (Hz), or the number of waves that pass a fixed point in a second. Human beings can normally hear sounds with a frequency between about 20 Hz and 20,000 Hz. Sounds with frequencies below 20 hertz are called infrasound.
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Frequency is the Number of vibrations made by a body in One sec.SI unit is Hertz(Hz)
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