DP Physics (first assessment 2025)

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Question EXE.1A.HL.TZ0.21

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXE.1A.HL.TZ0.21
Level HL Paper 1A Time zone TZ0
Command term Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
EXE.1A.HL.TZ0.21

An energy of 200 J is transferred isothermally to an ideal gas. The temperature of the gas is 27 °C.

The entropy change of the gas is


A.  0.67 J K−1

B.  0.14 J K−1

C.  1.5 J K−1

D.  7.4 J K−1

[1]

Markscheme

A

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