Wavelength and frequency
2 marks · NormalA sound wave travels through air at a speed of 330 m/s. If its frequency is 110 Hz, calculate the wavelength of this sound wave.
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3.0 m (±0.1)
Also accept: 2.99 m; 3 m
Common mistakes: 110 / 330 = 0.33 m
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Marking points
M1 · 1 mark · Substitute values into the wave equation
A1 · 1 mark · Wavelength correctly calculated as 3.0 m (accepted range: 2.9–3.1 m)
Worked solution
The wave equation is .
Rearrange for wavelength: .