How much time does a heartbeat last?

Correct option is B

Ans: (b) About 0.8 second Sol. A heartbeat typically lasts around 0.8 seconds. This is the duration for one complete cycle of the heart, which includes both the systole (contraction phase) and diastole (relaxation phase). The time can vary slightly depending on an individual's heart rate, which is influenced by factors such as age, physical fitness, and overall health. On average, a resting heart rate for adults is about 60 to 100 beats per minute, which corresponds to a duration of approximately 0.8 seconds per beat.
Explanation of each option:
· (a) About 2 seconds: This is too long for a typical heartbeat duration. At this rate, the heart would be beating much slower than normal.
· (c) About 0.5 second: While this is close, it is generally faster than the average heartbeat duration for most people at rest.
· (d) About 1.5 seconds: This duration is too long for most normal heartbeats and would indicate a much slower heart rate, typically seen in some abnormal heart rhythms or extreme relaxation.