A-LevelPhysicsSuperposition9702/12 · Oct/Nov 2025 · Q301 Mark
Two progressive sound waves move in opposite directions and superpose to form a stationary wave. Which statement describes an antinode of this stationary wave?
Aposition where the phase difference between the two waves is always 0°
Bposition where the phase difference between the two waves is always 180°
Cposition where the stationary wave has maximum amplitude
Dposition where the stationary wave has minimum amplitude
✓ Correct answer
C: position where the stationary wave has maximum amplitude
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