Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 28
9702Stationary waves
Two waves of the same type travelling in a medium meet at a point. Which statement describes the principle of superposition?
- AThe resultant amplitude of the two waves at that point is equal to the sum of the amplitudes of the individual waves.
- BThe resultant displacement of the two waves at that point is equal to the sum of the displacements of the individual waves.
- CThe resultant frequency of the two waves at that point is equal to the sum of the frequencies of the individual waves.
- DThe resultant intensity of the two waves at that point is equal to the sum of the intensities of the individual waves.
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Correct answer: B. The resultant displacement of the two waves at that point is equal to the sum of the displacements of the individual waves.
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