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 Multiple Choice QuestionsMultiple Choice Questions


'Young's modulus' is defined as the ratio of

  • hydraulic stress and hydraulic strain

  • shearing stress and shearing strain

  • tensile stress and longitudinal strain

  • bulk stress and longitudinal strain


A piece of copper is to be shaped into a conducting wire of maximum resistance. The suitable length and diameter are respectively

  • 2L and d/2

  • L/2 and 2d

  • L and d

  • 2L and d


The load versus elongation graph for four wires of the same materials is shown in the figure. The thinnest wire is represented by the line


  • OC

  • OD

  • OA

  • OB