JEE Main & Advanced
Physics
Thermometry, Calorimetry & Thermal Expansion
JEE PYQ-Thermometry Calorimetry and Thermal Expansion
question_answer
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 is: [JEE MAIN 2014] (For steel Youngs modulus is \[2\times {{10}^{11}}N{{m}^{-2}}\]and coefficient of thermal expansion is \[1.1\times {{10}^{-5}}{{K}^{-1}}\])