Two wires are fixed in a sonometer. Their tensions P W are in the ratio \( 8: 1 \). The lengths ...

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Two wires are fixed in a sonometer. Their tensions
P W are in the ratio \( 8: 1 \). The lengths are in the ratio - 36:35. The diameters are in the ratio \( 4: 1 \). Densities of the materials are in the ratio \( 1: 2 \). If the higher frequency in the setting is \( 360 \mathrm{~Hz} \), the beat frequency when the two wires sounded together is:
(1) 8
(2) 5
(3) 10
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