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

Option: 1

OD


Option: 2

OC


Option: 3

OB


Option: 4

OA


Answers (1)

best_answer

\begin{aligned} & l=\frac{F L}{A Y} \\ & \therefore \quad l\propto \frac{1}{r^2} \end{aligned} (Y,L and F are constant)

i.e for the same load, thickest wire will show minimum elongation. So, graph D represents the thickest wire.

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Divya Prakash Singh

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