Question

A stop clock gives 50 'ticks' in 25 seconds. What is the maximum uncertainty in the reading of a time interval measured with this clock, disregarding reaction error? What are its limits of uncertainty?

Answer 1

Stop clock have least count of 1 second so,

the maximum uncertainty in the reading of a time interval measured with this clock is $\ 1\ sec$

The limits of uncertainity is (25-0.5)\ to\ (25+0.5\ sec)\

So value will be $25\pm0.5\ sec$