Question

On an average, a human heart is found to beat $72$ times a minute. Its frequency and period are

• A. 1.2 Hz, 0.83 s
• B. 2.5 Hz, 1.2 s
• C. 2 Hz, 1.2 s
• D. 2.5 Hz, 0.83 s

Answer 1

Answer: (A)

1.2 Hz, 0.83 s

Answer 2

Frequency of the heart, $\upsilon$ = Number of beats per second $= \frac{72}{60 \, s} = 1.2 \, Hz$ Time period of the heart, $T = \frac{1}{ \upsilon } = \frac{1}{1.2} = 0.83 \, s$