DP Physics (first assessment 2025)
Question 22M.1A.SL.TZ1.3
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1A.SL.TZ1.3 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 3 | Adapted from | N/A |
3.
[Maximum mark: 1]
22M.1A.SL.TZ1.3
A student measures the time for 20 oscillations of a pendulum. The experiment is repeated four times. The measurements are:
10.45 s
10.30 s
10.70 s
10.55 s
What is the best estimate of the uncertainty in the average time for 20 oscillations?
A. 0.01 s
B. 0.05 s
C. 0.2 s
D. 0.5 s
[1]
Markscheme
C
Examiners report
This question was well answered, although option B was a significant distractor for candidates focusing on the last significant digit.