To find the period of a pendulum, a student measures the time for one full oscillation with an analogue stop-watch that has a second hand. Which modification to the method gives the largest increase in accuracy?
- Aasking a friend with a shorter reaction time to take the measurement
- Bmeasuring the time for 100 swings of the pendulum and dividing it by 100
- Cmeasuring the time for a half swing of the pendulum and doubling it
- Dusing a digital timer