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What are the dimensions of Poisson's ratio for a stretched wire?
ADimensionless, a pure number
BSame as that of stress
CSame as that of strain energy
DSame as that of Young's modulus
Answer & Solution
Correct answer: A. Dimensionless, a pure number
It is the ratio of lateral strain to longitudinal strain, and both strains are dimensionless, so the ratio is a pure number.
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