DP Physics (first assessment 2025)

Question 22M.1A.SL.TZ2.10

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.1A.SL.TZ2.10
Level	SL	Paper	1A	Time zone	TZ2
Command term		Question number	10	Adapted from	N/A

10.

[Maximum mark: 1]

22M.1A.SL.TZ2.10

A quantity of an ideal gas is at a temperature T in a cylinder with a movable piston that traps a length L of the gas. The piston is moved so that the length of the trapped gas is reduced to $\frac{5 L}{6}$ and the pressure of the gas doubles.

What is the temperature of the gas at the end of the change?

A.   $\frac{5}{12} T$

B.   $\frac{3}{5} T$

C.   $\frac{5}{3} T$

D.   $\frac{12}{5} T$

[1]

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Examiners report

Some comments queried that the Laws of Thermodynamics are not on the syllabus. This question was set as a test of Thermal Physics, topic 3, with option A coming from Mechanics, topic 2, not Thermodynamics.

Syllabus sections

B. The particulate nature of matter » B.3 Gas laws

Question 22M.1A.SL.TZ2.10

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