AQA · GCSE · Combined Science · Higher

Frequency f, wavelength and wave speed v equation

Q01.4 1 mark

Use the Physics Equations Sheet to answer questions 01.4 and 01.5.

Write down the equation that links frequency $(f)$ , wavelength $(\lambda)$ and wave speed $(v)$ .

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Marking points

1 Write the correct wave equation: wave speed = frequency × wavelength, or $v=f\lambda$ .

Full-mark answer

$v=f\lambda$

Why this answer loses marks

$v=f/\lambda$

The equation requires multiplying frequency by wavelength, not dividing by wavelength.