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Question 21M.2.SL.TZ2.b.i

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Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.SL.TZ2.b.i
Level SL Paper 2 Time zone TZ2
Command term Outline Question number b.i Adapted from N/A
b.i.
[Maximum mark: 2]
21M.2.SL.TZ2.b.i

A vertical tube, open at both ends, is completely immersed in a container of water. A loudspeaker above the container connected to a signal generator emits sound. As the tube is raised the loudness of the sound heard reaches a maximum because a standing wave has formed in the tube.

Outline how a standing wave forms in the tube.

[2]

Markscheme

«sound» wave «travels down tube and» is reflected ✓

incident and reflected wave superpose/combine/interfere ✓


OWTTE

Do not award MP1 if the reflection is quoted at the walls/container

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