Physics - Wave on String Question with Solution | TestHub

In a transverse wave the distance between a crest and neighbouring trough at the same instant is $4.0\mathrm{cm}$ and the distance between a crest and trough at the same place is $1.0\mathrm{cm}$. The next crest appears at the same place after a time interval of $0.4\mathrm{s}$. The maximum speed of the vibrating particles in the medium is: