The correct option is
D none of these
Mass of the string is M. Let the length of the string be L & tension be T
Velocity V=√Tμ
Let us consider the distance travelled by the wave be x.
∴ The tension T=(ML)xg
⇒V0=√(m/L)xg(m/L)
[V=√xg]
The velocity V of the pulse related to the distance covered by it.
∴ Option (D) is correct.
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