The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C…

The pressure that has to be applied to the ends of a steel wire of length $\displaystyle 10$ cm to keep its length constant when its temperature is raised by $\displaystyle 100$°C is : (For steel Young's modulus is $\displaystyle 2 \times 10^{11} \mathrm{~N} \mathrm{~m}^{-2}$ and coefficient of thermal expansion is $\displaystyle 1.1 \times 10^{-5} \mathrm{~K}^{-1}$ )