Edexcel IGCSE Physics · Spec 3.6-3.7
Wave Speed: Using the Equation
Worked examples using the wave speed equation.
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Wave Speed: Using the Equation
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Spec 3.6-3.7
What you need to know
- Use wave speed equals frequency times wavelength
- Rearrange it to find frequency or wavelength
- Use period equals one over frequency
Active recall
Quick check
Answer each question before opening the answer.
What is the wave speed equation?
Wave speed = frequency × wavelength (v = f × λ).
A wave has frequency 50 Hz and wavelength 2 m. What is its speed?
v = f × λ = 50 × 2 = 100 m/s.
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