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[" Two identical wires are stretched by ...

[" Two identical wires are stretched by the same tension "101N" and each emits a node of frequency "202Hz" ."],[" If the tension in one wire is increased by "1N" ,then the beat frequency is "],[[" (1) "2Hz," (2) "(1)/(2)Hz],[" (3) "1Hz," (4) None of these "]]

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