A speed of transverse wave on a straight wire (mass 6.0 g, length 60 cm) and area of cross-section of wire 1.0 mm2 is 90 m/sec . If the young’s modulus of wire is 16×1011N/m2. The extension of wire over a natural length is ______mm

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answer is 0000.03 .

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Detailed Solution

Speed of sound in stringV=Tμ ⇒90=YAΔllml=16×1011×10-6×Δl6×10−3 ⇒Δl=0.03 mm.

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