A tension of 20 {N} is applied to a copper wire of cross sectional area 0.01 {cm}^{2}, Young's modulus of copper is 1.1 \\times10^{11} {N} \/ {m}^{2} and Poisson's ratio is 0.32 . The decrease in cross sectional area of the wire is

Correct Answer is : 1.16×10−6cm2

AP EAMCET Engineering 2013 Solved Paper

Section: Physics

Question : 13 of 160

Marks: +1, -0

A tension of 20N is applied to a copper wire of cross sectional area 0.01cm2, Young's modulus of copper is 1.1×1011N∕m2 and Poisson's ratio is 0.32. The decrease in cross sectional area of the wire is

1.16×10−6cm2
1.16×10−5m2
1.16×10−4m2
1.16×10−3cm2

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