Two identical wires are stretched by the same P tension of \( 100 \...

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Two identical wires are stretched by the same
P tension of \( 100 \mathrm{~N} \) and each emits a note of frequency

W \( 200 \mathrm{~Hz} \). If the tension in one wire is increased by \( 1 \mathrm{~N} \), then the beat frequency is
(1) \( 2 \mathrm{~Hz} \)
(2) \( 1 / 2 \mathrm{~Hz} \)
(3) \( 1 \mathrm{~Hz} \)
(4) None of these
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