A steel rod of length 5m is fixed rigidl...

A steel rod of length 5m is fixed rigidly between two supports. a of steel = `12xx10^(-6)//""^(@)C,Y=2xx10^(11)Nm^(-2)`. With the increase in its temperature by `40^(@)C`, the stress developed in the rod is

`9.6xx10^(5)Nm^(-2)`

`9.6xx10^(6)Nm^(-2)`

`9.6xx10^(7)Nm^(-2)`

`9.6xx10^(8)Nm^(-2)`

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