Consider a harmonic wave travelling on a string of mass per unit length \( \mu \). The wave has ...

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Consider a harmonic wave travelling on a string of mass per unit length \( \mu \). The wave has a velocity \( v \), amplitude \( A \) and frequency \( f \). The power transmitted by a harmonic wave on the string is proportional to (take constant of proportionality as \( 2 \pi^{2} \) ):
(A) \( \mu \)
(B) \( v \)
(C) \( A^{2} \)
(D) \( f^{2} \)
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