The displacement $y$ (in $cm$) produced by a simple harmonic wave is $y = \frac{{10}}{\pi }\sin \left( {2000\pi t - \frac{{\pi x}}{{17}}} \right)$. The periodic time and maximum velocity of the particles in the medium will respectively be
  • A${10^{ - 3}}\,sec$ and $330 \,m/sec$
  • B${10^{ - 4}}\,sec$ and $20 \,m/sec$
  • C${10^{ - 3}}\,sec$ and $200\, m/sec$
  • D${10^{ - 2}}\,sec$ and $2000\, m/sec$
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