A student investigates a pendulum.
He measures the time for the pendulum to complete 25 oscillations.
He repeats the experiment three more times.
The readings are shown in the table below:
| Trial | Time for 25 oscillations (s) |
|---|---|
| 1 | 29.8 |
| 2 | 30.6 |
| 3 | 29.4 |
| 4 | 30.2 |
What is the average period of the pendulum?
1.20 s1.20\text{ s}1.20 s
1.25 s1.25\text{ s}1.25 s
29.8 s29.8\text{ s}29.8 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.