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Question 18M.2.SL.TZ2.3a.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.2.SL.TZ2.3a.i
Level SL Paper 2 Time zone TZ2
Command term Outline Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
18M.2.SL.TZ2.3a.i

A loudspeaker emits sound towards the open end of a pipe. The other end is closed. A standing wave is formed in the pipe. The diagram represents the displacement of molecules of air in the pipe at an instant of time.

(a.i)

Outline how the standing wave is formed.

[1]

Markscheme

the incident wave «from the speaker» and the reflected wave «from the closed end»

superpose/combine/interfere

 

Allow superimpose/add up

Do not allow meet/interact

[1 mark]

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