A stress of 3.18xx10^(8)" Nm"^(-2) is ap...

A stress of `3.18xx10^(8)" Nm"^(-2)` is applied to a steel rod of length 1 m along its length, its Young's modulus is `2xx10^(11)"Nm"^(-2)`. Then the elongation in mm produced in the rod, is

3.18

6.36

5.18

1.59

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