A-LevelPhysicsSuperposition9702/12 · May/June 2020 · Q271 Mark
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.
✓ Correct answer
B: The waves must be of the same type.
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