O-LevelPhysicsWaves5054/12 · Oct/Nov 2025 · Q261 Mark
The table shows the speed and the wavelength for different sound waves in four different materials. [Table 26.1] Which waves are ultrasound waves?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A1 and 3
B1 only
C2 and 4
D4 only
✓ Correct answer
C: 2 and 4
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