A transverse wave is represented by 

$y = \frac{{10}}{\pi }\,\sin \,\left( {\frac{{2\pi }}{T}t - \frac{{2\pi }}{\lambda }x} \right)$

For what value of the wavelength the wave velocity is twice the maximum particle velocity ..... $cm$ ?

  • A$40$
  • B$20$
  • C$10$
  • D$60$
JEE MAIN 2014, Medium
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