Suppose we have a metal rod of a length of 50 m at 300 K and if it is heated up to 500 K causes , in this process the change in length (ΔL) is 5 m due to linear expansion and the coefficient of linear expansion for this metal is _______.
1
5× 10-6 K-1
2
5× 10-4 K-1
3
5× 104 K-1
4
5× 106 K-1