A sound wave has a frequency of 340 Hz and travels through air at a speed of 340 m/s. What is the wavelength of the sound wave?
A0.1 m
B1.0 mCORRECT
C10.0 m
D100.0 m
GCEPhysicsWaves and Sound2024
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Why the answer is B, and why the others tempt you.
The wave equation relates speed, frequency, and wavelength: v = fλ, so λ = v/f = 340/340 = 1.0 m. Distractor A results from inverting the division, while C and D arise from arithmetic errors by factors of 10.
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