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WAEC - Physics (2006 - No. 30)
The distance between the successive crests of a wave travelling at 20ms\(^{-1}\) is 25cm. Calculate the frequency of the wave
0.8Hz
5.0Hz
50.0Hz
80.0hz
Uitleg
f = \(\frac{v}{\lambda} = \frac{20}{0.25} = 80Hz\)
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