Lead, as a material used in construction, has E = 15 GPa and K = 50 GPa. What is its Poisson's Ratio?

0.225

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0.30

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0.40

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0.45

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Solution

The correct option is D 0.45
$E = 3 k (1 - 2 μ)$
$\Rightarrow 15 = 3 \times 50 (1 - 2 μ)$
$∴ μ = 0.45$

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