Physics 9702 · AS & A Level · Stress and strain

Stress and strain — practice question

In stress-strain investigations on metal wires, the stress axis is commonly labelled in units of $10^8\,\text{Pa}$, while the strain axis is given as a percentage. The diagram shows this for one particular wire. What is the value of the Young modulus for the material of the wire?

  • A$6.0 \times 10^7\,\text{Pa}$
  • B$7.5 \times 10^8\,\text{Pa}$
  • C$1.5 \times 10^9\,\text{Pa}$
  • D$6.0 \times 10^9\,\text{Pa}$

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