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# The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

Q.9.    The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

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Given the frequency of the sound wave is 100Hz.

Frequency is the number of oscillations per second.

So, 100Hz means that 100 oscillations are done in 1 second.

Thus, in a minute, the number of oscillations would be,

$= 100\times60 = 6000$

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