Wires of different radii are used in Searle's experiment for measuring elasticity properties of a given material. In stress v/s strain graph, on using wire of larger radius. (Length of the wire remains constant)

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Slope of the stress-strain graph is Y . Y is a property of the material only, not of radius. The line does not change, so it will not rotate.

Physics - Elasticity Question with Solution | TestHub

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