DP Physics (first assessment 2025)

Question EXE.1A.SL.TZ0.10

Date	Example questions Example questions	Marks available	[Maximum mark: 1]	Reference code	EXE.1A.SL.TZ0.10
Level	SL	Paper	1A	Time zone	TZ0
Command term		Question number	10	Adapted from	N/A

10.

[Maximum mark: 1]

EXE.1A.SL.TZ0.10

A sample of a gas has volume $V$ and contains $N$ molecules, each of mass $m$ . The average translational speed of the molecules is $u$ .

Which expression is equivalent to the pressure of the gas?

A. $\frac{1}{3} \frac{N V}{m} u^{2}$

B. $\frac{1}{3} \frac{N m}{V} u^{2}$

C. $\frac{1}{3} \frac{N}{m V} u^{2}$

D. $\frac{1}{3} \frac{m}{N V} u^{2}$

[1]

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