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  4. If the frequency of human heart beat is 1.25 Hz, the number of heart beats in 1 min is

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Q. If the frequency of human heart beat is $1.25\, Hz$, the number of heart beats in 1 min is

KEAMKEAM 2010Oscillations

Solution:

The number of beat in
$ 1\text{ }s=1.25\text{ }Hz $
$ \therefore $ The number of beat in 1 min
$ =1.25\times 60=75 $