Two waves have their crests separated by a distance of 20m .Each waves have a velocity of 4m/s . Find - (i) Wave length (ii) frequency
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Answer:
wavelength - 20m frequency - 0.2Hz
Explanation:
wavelength is the distance between two troughs or two crests. therefore, if the distance between two crests is 20, wavelength also equals 20m.
now, according to formula,
wave velocity = wave length x frequency
:. 4 = 20 x f
:. f = 4/20
:. frequency = 1/5Hz or 0.2Hz
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