Physics 9702 · AS & A Level · Elastic and plastic behaviour

Elastic and plastic behaviour — practice question

The force-extension graph for a wire is shown. Which row could correctly identify the labels X, Y and Z?

  • Alimit of proportionality: X; region of elastic deformation: Y; region of plastic deformation: Z
  • Blimit of proportionality: Z; region of elastic deformation: Y; region of plastic deformation: X
  • Climit of proportionality: Y; region of elastic deformation: Z; region of plastic deformation: X
  • Dlimit of proportionality: Z; region of elastic deformation: X; region of plastic deformation: Y

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