A steel rail of length 5 m and area of cross section 40 `cm^2` is prevented from expanding along its length while the temperature rises by `10^(@) C`. If coefficient of linear expansion and Young's modulus of steel are `1.2 xx 10^(-5) K^(-1) and 2 xx 10^(11) "Nm"^(-2)` respectively, the developed in the rail is approximately :

Options

A. `2 xx 10^(9)` N
B. `3 xx 10^(-5)` N
C. `2 xx 10^(7)` N
D. `1 xx 10^(5)` N

Answer

D