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Volumetric strain for a rectangular specimen of length l, breadth b and thickness t subjected to a pull of P is given by

A. e (1 - 2m)

B. e (1 - 2/m)

C. e (m - 2)

D. e (2/m - 1)

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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