AQA · GCSE · Combined Science · Higher

Frequency, wavelength and wave speed equation

Q01.3 1 mark

Use the Physics Equations Sheet to answer questions 01.3 and 01.4.

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

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Marking points

1 Write the wave equation as $v=f\lambda$ , or in words as wave speed = frequency × wavelength.

Full-mark answer

$v=f\lambda$

Why this answer loses marks

frequency = wavelength × wave speed

This rearranges the quantities incorrectly. Wave speed is frequency multiplied by wavelength.