The pressure that has to be applied to the ends of a steel wire of length 10cm to keep its length constant when its temperature is raised by 100°C is:
(For steel Young's modulus is 2×10¹¹Nm⁻² and coefficient of thermal expansion is 1.1×10⁻⁵K⁻¹)
A. 2.2×10⁷Pa
B. 2.2×10⁶Pa
C. 2.2×10⁸Pa
D. 2.2×10⁹Pa