Physics for IGCSE & O level - Waves And Sounds (Section 1 - No. 32)
If sound A has a frequency of 220 Hz, what is its wavelength (speed of sound = 330 m/s)?
0.75 m
1.5 m
3.0 m
6.0 m
Giải thích
Wavelength = speed / frequency = 330 m/s / 220 Hz = 1.5 m