The equation of a transverse wave is given by $y = 10\sin \pi (0.01x - 2t)$ where $x$ and $y$ are in $cm$ and $t$ is in second. Its frequency is  .... ${\sec ^{ - 1}}$
  • A$10$
  • B$2$
  • C$1$
  • D$0.01$
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