Question

If the frequency of human heart is 1.25 Hz, the number of heart beats in 1 minute is

• A. 65
• B. 75
• C. 80
• D. 90

Answer 1

Answer: (B)

75

Answer 2

Beat frequency of heart $= 1.25Hz$

$\therefore$ Number of beats in 1 minute $= 1.25 \times 60 = 75$