Question

Human heart on the average beats 72 times per minute its frequency is

Answer 1

The correct answer to the question is 1.2 Hz.

CALCULATION:

As per the question, human heart on the average beats 72 times per minute.

We are asked to calculate the frequency of the of the heart beat.

The frequency of human heart beat is defined as the number of heart beats per second.

Human heart takes one minute for 72 heart beats.

Hence, the number of heart beats per second will be = $\frac{72}{60\ seconds}$

                                                                                         = $1.2\ second^{-1}$

                                                                                         = 1.2 Hz.

Here, Hz [ hertz ] is the unit of frequency.