DP Physics (first assessment 2025)

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Question 23M.2.SL.TZ1.e

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.SL.TZ1.e
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.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 − 92602 = 0.847 ✓

this engine has e < ec as it should ✓

 

Award [0] if no calculation shown.

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