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Where should a stretched wire, held betw...

Where should a stretched wire, held between two fixed supports, be plucked and touched to excite its second harmonic ?

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In the second harmonic, there is a node at the centre and an antinode at 1/4 and 3/4 points form one end of the wire.
In order to excite second harmonic, the wire should be plucked at `(1)/(4)` th of its length and touched at its centre.
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