A human heart on an average beat 72 times a minute. Calculate its frequency

72 s^{- 1}

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1.2 s^{- 1}

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4320 s^{- 1}

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None

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Solution

The correct option is B $1.2 s^{- 1}$
No of beat = $72 m i n^{- 1}$ = $\frac{72}{1 m i n} = \frac{72}{60}$ = $1.2 s^{- 1}$
Frequency = $1.2 s^{- 1}$

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