DP Physics (first assessment 2025)
Question 23M.2.SL.TZ2.1b
| Date | May 2023 | Marks available | [Maximum mark: 3] | Reference code | 23M.2.SL.TZ2.1b |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | Show | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 3]
23M.2.SL.TZ2.1b
The student collects the following data.
| Gauge pressure Δp / kPa | Maximum force Fmax / N |
| 10 | 108 |
| 20 | 133 |
| 30 | 158 |
| 40 | 170 |
| 50 | 188 |
| 60 | 192 |
| 70 | 206 |
| 80 | 220 |
The student initially hypothesizes that Fmax is proportional to Δp.
(b)
Show, using two suitable data points from the table, that the student’s initial hypothesis is not supported.
[3]
Markscheme
refers to 2 non-adjacent points ✓
suitable calculation to analyze the proportionality ✓
identifies variation/difference in calculated values, «thus hypothesis not supported» ✓
Award full marks if more than two points used appropriately.
Allow [2 max] if they use at least three points to show that two increments in force are not consistent with the corresponding increments in pressure and therefore it is not a straight line.
