If the Poisson's ratio for a metal is 0.3, it means that

Longitudinal strain is 0.3 times the lateral strain

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Lateral strain is 0.3 times the longitudinal strain

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Lateral strain is smaller than the longitudinal strain

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Longitudinal strain is smaller than the lateral strain

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Solution

The correct options are
B Lateral strain is 0.3 times the longitudinal strain
C Lateral strain is smaller than the longitudinal strain
Since Poisson's ratio is the ratio of the lateral strain to the longitudinal strain, the lateral strain is 0.3 times the longitudinal strain and hence smaller than this.

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