A stretched wire of a material whose Young's modulus {\Y}=2 \times 10^{11} {\Nm}^{-2} has Poisson's ratio 0.25 . Its lateral strain \epsilon_{ℓ}=10^{-3}. The elastic energy density of the wire is

Correct Answer is : 16×105Jm−3

KCET 2023 Physics Solved Paper

Question : 41 of 60

Marks: +1, -0

A stretched wire of a material whose Young's modulus Y=2×1011Nm−2 has Poisson's ratio 0.25 . Its lateral strain εℓ=10−3. The elastic energy density of the wire is

4×105Jm−3
8×105Jm−3
16×105Jm−3
1×105Jm−3

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