DP Physics (first assessment 2025)
Question EXE.2.SL.TZ0.ii
| Date | Example questions Example questions | Marks available | [Maximum mark: 2] | Reference code | EXE.2.SL.TZ0.ii |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Show that | Question number | ii | Adapted from | N/A |
ii.
[Maximum mark: 2]
EXE.2.SL.TZ0.ii
The temperatures are now reversed so that X is at 45 °C and Z is at 90 °C. Show that the rate of energy transfer is unchanged.
[2]
Markscheme
repeats calculation to show that θ = 75 °C ✓
temperature difference across YZ is still 15 K which gives the same rate of energy transfer (but in opposite direction) ✓
