Two solid bars having Young's modulus \( Y_{1} \) and \( Y_{2} \) is in the ratio of \( Y_{1} / ...

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Two solid bars having Young's modulus \( Y_{1} \) and \( Y_{2} \) is in the ratio of \( Y_{1} / Y_{2}=4 \). If the bars are made up of materials with same density, then the ratio of the speeds of longitudinal waves in the solid bars i.e. \( v_{1} / v_{2} \) is
(a) 2
(b) 1
(c) 3
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