Question

3. A human heart beats 72 times in a minute. Its frequency will be (a) 1.9 HZ (b) 1.2 Hz (c) 2.5 Hz (d) 8.2 Hz

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Answer 1

Answer:

I. think of opction b) 1.2 Hz

Answer 2

Answer:

b) 1.2 Hz

Explanation:

Solution  

No of beat =$72 min^{-1}$ = 72  /  1min = 72/ 60

=​$1.2s^{-1}$

1 Hz = 1 $s^{-1}$

$1.2s^{-1}$=1.2 Hz

 

Hope this helps!