In an experiment to determine the Young's modulus, steel wires of five different lengths (1, 2, 3, 4, and 5 m) but of same cross section (2 mm^2)…

In an experiment to determine the Young's modulus, steel wires of five different lengths ($\displaystyle 1$, $\displaystyle 2$, $\displaystyle 3$, $\displaystyle 4$, and $\displaystyle 5$ m) but of same cross section $\displaystyle \left(2 \mathrm{~mm}^2\right)$ were taken and curves between extenstion and load were obtained. The slope (extension/load) of the curves were plotted with the wire length and the following graph is obtained. If the Young's modulus of given steel wires is $\displaystyle x \times 10^{11} \mathrm{Nm}^{-2}$, then the value of $\displaystyle x$ is \_\_\_\_.