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 $100^{\circ}C$ is : <br> (For steel Young’s modulus is $2 \times 10^{11} N m^{–2}$ and coefficient of thermal expansion is $1.1 \times 10^{–5} K^{–1}$ )

Question

( A ) $2.2 \times 10^7$ Pa
( B ) $2.2 \times 10^9$ Pa
( C ) $2.2 \times 10^8$ Pa
( D ) $2.2 \times 10^6$ Pa