A string of mass $2.5\ kg$ is under a tension of $200\ N$ . The length of the stretched string is $20.0\ m$ . If the transverse jerk is struck at one end of the string, the disturbance will reach the other end in .... $\sec$

  • A

    $1$

  • B

    $0.5$

  • C

    $2$

  • D

    data given is insufficient.

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