A-LevelPhysicsSuperposition9702/12 · Oct/Nov 2014 · Q251 Mark

A stationary sound wave is produced in a tube. Which statement describes the wave speed?

AIt is the distance between two adjacent nodes divided by the period of the wave.

BIt is the speed at which energy is transferred from one antinode to an adjacent antinode.

CIt is the speed of a particle at an antinode.

DIt is the speed of one of the progressive waves that are producing the stationary wave.

✓ Correct answer

D: It is the speed of one of the progressive waves that are producing the stationary wave.

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Topic: Superposition, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2014 Paper 1 Variant 2, question 25.

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