DP Physics (last assessment 2024)

Question 21N.2.SL.TZ0.3c.i

Date	November 2021	Marks available	[Maximum mark: 1]	Reference code	21N.2.SL.TZ0.3c.i
Level	SL	Paper	2	Time zone	TZ0
Command term	Calculate	Question number	c.i	Adapted from	N/A

c.i.

[Maximum mark: 1]

21N.2.SL.TZ0.3c.i

A standing sound wave is established in a tube that is closed at one end and open at the other end. The period of the wave is $T$ . The diagram represents the standing wave at $t = 0$ and at $t = \frac{T}{8}$ . The wavelength of the wave is 1.20 m. Positive displacements mean displacements to the right.

(c.i)

Calculate the length of the tube.

[1]

Markscheme

L = « $\frac{3}{4} λ =$ » 0.90 «m» ✓

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Core

Core » Topic 4: Waves » 4.5 – Standing waves

Core » Topic 4: Waves

Question 21N.2.SL.TZ0.3c.i

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