Liquids have no Poisson's ratio,because

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(A) Poisson's ratio is defined as the ratio of lateral strain to longitudinal strain for a material under tension or compression. This definition is a

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They have no definite shape

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(A) Poisson's ratio is defined as the ratio of lateral strain to longitudinal strain for a material under tension or compression. This definition is applicable only to solids that possess a definite shape and can sustain shear stress. Liquids do not have a definite shape and cannot sustain shear stress; they only resist changes in volume (bulk modulus). Therefore,the concept of lateral and longitudinal strain does not apply to liquids,meaning they have no Poisson's ratio.

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