what is exact definition of frequency
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Frequency describes the number of waves that pass a fixed place in a given amount of time. So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second. ... For example, an "A" note on a violin string vibrates at about 440 Hz (440 vibrations per second).
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the number of oscillations per second is known as frequency.
Frequency=1/Time (second)
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