MCQ Solution: Waves
The speed of sound in air is 343 m/s. What is the wavelength of a sound wave with a frequency of 686 Hz?
1) 4 m
2) 2 m
3) 1 m
4) 0.5 m
v =ëf, soë= v/f = (343 m/s)/(686 Hz)
= 0.5 m.
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