A-LevelPhysicsSuperposition9702/12 · May/June 2021 · Q261 Mark

A pipe of length L is open at one end and closed at the other end. A loudspeaker is at the open end and emits a sound wave into the pipe. [Figure 26.1] When a stationary wave is formed, there is an antinode at the open end of the pipe. Which wavelength of sound could be used to produce a stationary wave?

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A2L / 3

C4L / 3

D2L

✓ Correct answer

C: 4L / 3

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Topic: Superposition, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2021 Paper 1 Variant 2, question 26.

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