O-LevelPhysicsWaves5054/12 · Oct/Nov 2018 · Q221 Mark
Which statement about a water wave is correct?
AThe amplitude is the vertical distance between a trough and a peak.
BThe frequency is the number of troughs passing a point in one second added to the number of peaks passing a point in one second.
CThe speed is the horizontal distance travelled per second by a peak.
DThe wavelength is the horizontal distance between a trough and a peak.
✓ Correct answer
C: The speed is the horizontal distance travelled per second by a peak.
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