IB Physics HL B 4 8 Hl Local Entropy Decrease Questions

Analyse HL cases where a system’s entropy decreases locally, explaining compensating entropy changes in the surroundings and the required increase for the universe.

Exam points

Apply rotational Newton’s second law τ = Iα to relate resultant torque and angular acceleration.
Calculate torque, angular acceleration or moment of inertia in rotating systems using complete mark-scheme evidence.

[Maximum number: 1]

A gas is compressed at constant temperature.

What are the changes in entropy of the gas and its surroundings during the compression?

Entropy of the gas

Entropy of surroundings

Increases

Decreases

Increases

Decreases

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IB Physics HL B 4 8 Hl Local Entropy Decrease Questions question 1