Physics (AS & A Level) · May / June 2020 · Paper 12 · Question 27
9702Stationary waves
Two progressive waves meet at a point. Which condition must be met for superposition of the waves to occur?
- AThe waves must be coherent.
- BThe waves must be of the same type.
- CThe waves must be travelling in opposite directions.
- DThe waves must meet in phase.
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Correct answer: B. The waves must be of the same type.
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