A student investigates the period of a simple pendulum.
She measures the time taken for the pendulum to complete 25 oscillations. She repeats the experiment three more times.
The readings are shown in the table below:
| Experiment | Time for 25 oscillations (s) |
|---|---|
| 1 | 29.4 |
| 2 | 30.2 |
| 3 | 28.8 |
| 4 | 29.6 |
What is the average period of the pendulum?
1.18 s1.18\text{ s}1.18 s
1.20 s1.20\text{ s}1.20 s
29.5 s29.5\text{ s}29.5 s
30.0 s30.0\text{ s}30.0 s
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.