Physics for IGCSE & O level - Waves And Sounds (Section 3 - No. 12)
If a sound wave's frequency is doubled, what happens to its speed (assuming the medium stays the same)?
The speed doubles.
The speed halves.
The speed stays the same.
The speed becomes zero.
Vysvětlení
The speed of sound depends on the medium, not the frequency. The speed is constant.