Physicsmedium · Past Paper
What is the wavelength of a sound wave with a frequency of 20 Hz in air where the speed of sound is 340 m/s?
A17 m
B6.8 m
C0.058 m
D6800 m
✓ Correct Answer: A — 17 m
lambda = v / f = 340 / 20 = 17 meters.
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