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The stress versus strain graphs for wires of two materials $A$ and $B$ are as shown in the figure. If ${Y_A}$ and ${Y_B}$ are the Young ‘s modulii of the materials, then
  • A${Y_B} = 2{Y_A}$
  • B${Y_A} = {Y_B}$
  • C${Y_B} = 3{Y_A}$
  • D${Y_A} = 3{Y_B}$
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