Physics Question from JEE Main 2023 · 6 April, Shift 1

A steel rod has a radius of $20 \, \text{mm}$ and a length of $2.0 \, \text{m}$. A force of $62.8 \, \text{kN}$ stretches it along its length. Young's modulus of steel is $2.0 \times 10^{11} \, \text{N/m}^2$. The longitudinal strain produced in the wire is _____ $\times 10^{-5}$. (Take $\pi = 3.14$)