DP Physics (first assessment 2025)

Test builder »

Question EXE.2.HL.TZ0.d

Select a Test
Date Example questions Example questions Marks available [Maximum mark: 3] Reference code EXE.2.HL.TZ0.d
Level HL Paper 2 Time zone TZ0
Command term Comment Question number d Adapted from N/A
d.
[Maximum mark: 3]
EXE.2.HL.TZ0.d

The system is initially in configuration A. Comment, with reference to the second law of thermodynamics and your answer in (c), on the likely evolution of the system.

[3]

Markscheme

The second law predicts that isolated systems spontaneously evolve towards high-entropy states ✓ 

From (c), the entropy of B is greater than that of A ✓ 

The final state will likely be similar to B / contain relatively many low-energy particles «of different energies» ✓

Syllabus sections