A-LevelPhysicsSuperposition9702/12 · Feb/Mar 2024 · Q301 Mark
Two wave sources emit coherent waves. Which condition must be correct for the coherent waves?
AThe waves are emitted in phase.
BThe waves are emitted and move in opposite directions.
CThe waves are emitted with a constant phase difference.
DThe waves are emitted with the same amplitude.
✓ Correct answer
C: The waves are emitted with a constant phase difference.
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