The least count of a stopwatch is . The time of oscillations of a pendulum is measured to be . The minimum percentage error in the measurement of time will be:
Step 1: Given Data
The least count of the stopwatch is,
The number of oscillations for which the time measured is,
The measured time is,
Step 2: Formula used
Error % =
Step 3: Calculation
The time period of each oscillation = Given time/ number of oscillations
Error in the time period per each oscillation = least count/number of oscillations
⇒ error % =
⇒ error % =
⇒ error % =
⇒ The minimum percentage error in the given measurement is