The wavelength of a sound wave of frequency 660 Hz travelling at 330 m/s is
A5 m only
B0.5 m
C1.5 m only
D2 m only
Answer & Solution
Correct answer: B. 0.5 m
1. Use V = f * wavelength, so wavelength = V/f.
2. wavelength = 330 / 660.
3. = 0.5 m.
4. So the wavelength is 0.5 m.
_Source: Selina Concise Physics Class 9, Ch 8 Sound (Mistral OCR'd PDF), section on numerical examples_
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