A wave travels in a medium according to the equation of displacement given by $y(x,\,t) = 0.03\sin \pi (2t - 0.01x)$ where $y$ and $x$ are in metres and $t$ in seconds. The wavelength of the wave is  .... $m$
  • A$200$
  • B$100$
  • C$20 $
  • D$10$
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