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[" 15) Two wires are in unison.If the te...

[" 15) Two wires are in unison.If the tension in one of "],[" the wires is increased by "2%,5" beas are produced "],[" per second.The initial frequency of each wire is "],[" N "1000Hz],[" B) "500Hz],[" C) "400Hz],[" D) "200Hz]

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