a stopwatch has a circular divided into 60 divisions.the hand of a stopwatch makes one complete revolution in one minute what is the least count of a stopwatch .
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If the hand of the stopwatch makes 1 revolution in minute and each revolution on is divided into 60 divisions then smallest division correspond to 60/60 = 1 sec
Hence least count = 1 sec
Answered by
3
total divisions on a stopwatch = 60 (A)
time taken for one revolution = 60 secs (B)
Least count => smallest division => B/A
=> 60/60 => 1 second
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