The diagram shows a force-extension graph for | vedclass

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(A) The graph shows a hysteresis loop for a rubber band. $(I)$ The graph is a force-extension graph,not a force-compression graph. Therefore,we cannot

Vedclass · Accepted Answer

$III$ only

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(A) The graph shows a hysteresis loop for a rubber band. $(I)$ The graph is a force-extension graph,not a force-compression graph. Therefore,we cannot deduce anything about compression from this graph. $(II)$ The graph starts at the origin $(0,0)$ and returns to the origin $(0,0)$ after the cycle is completed,which indicates that the rubber band returns to its original length. Thus,statement $(II)$ is incorrect. $(III)$ The area enclosed by the hysteresis loop represents the energy dissipated as heat during one complete cycle of stretching and unstretching. Therefore,the rubber band will get heated. Thus,statement $(III)$ is correct. Hence,only statement $(III)$ can be deduced from the graph.

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