A tension of 22 {N} is applied to a copper wire of cross-sectional area 0.02 {cm}^{2} Young's modulus of copper is 1.1 \\times10^{11} {N} \/ {m}^{2} and Poisson's ratio0.32. The decrease in cross-sectional area will be

Correct Answer is : 0.64×10−6cm2

AP EAMCET Engineering 2012 Solved Paper

Section: Physics

Question : 23 of 160

Marks: +1, -0

A tension of 22N is applied to a copper wire of cross-sectional area 0.02cm2 Young's modulus of copper is 1.1×1011N∕m2 and Poisson's ratio0.32. The decrease in cross-sectional area will be

1.28×10−6cm2
1.6×10−6cm2
2.56×10−6cm2
0.64×10−6cm2

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