Physics - Heat & Thermo Question with Solution | TestHub

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