DP Physics (first assessment 2025)
Question 23M.2.SL.TZ1.7e
| Date | May 2023 | Marks available | [Maximum mark: 2] | Reference code | 23M.2.SL.TZ1.7e |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Outline | Question number | e | Adapted from | N/A |
e.
[Maximum mark: 2]
23M.2.SL.TZ1.7e
(e)
The highest and lowest temperatures of the gas during the cycle are 602 K and 92 K.
The efficiency of this engine is about 0.6. Outline how these data are consistent with the second law of thermodynamics.
[2]
Markscheme
ec = 1 − = 0.847 ✓
this engine has e < ec as it should ✓
Award [0] if no calculation shown.
