For which material Poisson’s ratio is greater than 1.

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Steel

Copper

Aluminum

None of the Above.

answer is D.

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Detailed Solution

Concept: Poisson's ratio is always used to find the coefficient of expansion when force is applied to the material.
Lateral strain is the ratio of change in diameter to the actual diameter of the material, and linear strain is the ratio of change in length to actual length. Poisson's ratio is a fixed term, meaning that Poisson's ratio ranges from 0 to 1 for any material. No material is greater than 1 and less than 0. If the Poisson's ratio is not between 0 and 1, the expected or resolved value is incorrect.
Hence, the correct option is 4.

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