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 :

A steel rail of length 5 m and area of cross section 40 cm^2 is preven

1.	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 :
Answer» `2 xx 10^(9)` N `3 xx 10^(-5)` N `2 xx 10^(7)` N `1 xx 10^(5)` N Answer :D