The wave equation
2 marks · EasyA light wave has a frequency of 5.0 × 10 Hz and a wavelength of 6.0 × 10 m. Calculate the speed of the wave.
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3.0 × 10^8 m/s (±5000000)
Also accept: 3.0 × 10^8 m/s
Common mistakes: wrong powers of ten; multiplying or dividing incorrectly
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Marking points
M1 · 1 mark · Substitutes correct values into v = f × λ.
A1 · 1 mark · Calculates correct value with unit (3.0 × 10^8 m/s).
Worked solution