In order to determine the period of oscillation of a mass suspended from a vertical spring, a student times one complete upward and downward movement using a handheld digital stopwatch.
Which modification to the procedure produces the greatest improvement in the accuracy of the measured period?
Using a stopwatch with three decimal places instead of two decimal places.
Timing the duration of 50 complete oscillations and dividing the measured time by 50.
Timing the interval from the lowest point to the highest point of the oscillation and doubling the result.
Having another student with a quicker reaction time operate the stopwatch.
164 exam-style questions on CIE IGCSE Physics Physical quantities and measurement techniques, covering Physical quantities and measurement techniques. Each one has a worked solution and a mark scheme showing where the marks go.