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Two separate wires \( A \) and \( B \) are stretched by \( 2 \mathrm{~mm} \) and
P \( 4 \mathrm{~mm} \) respectively, when they are subjected to a force of

W) \( 2 \mathrm{~N} \). Assume that both the wires are made up of same material and the radius of wire \( B \) is 4 times that of the radius of wire \( A \). The length of the wires \( A \) and \( B \) are in the ratio of a: \( b \). Then \( a / b \) can be expressed as \( 1 / x \) where \( x \) is
[JEE Main-2021 (March)]
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