A steel rod is heated from 25 to 250 degree celcius. Its coefficient of thermal

Question

A steel rod is heated from 25 to 250 degree celcius. Its coefficient of thermal expansion is 10⁻⁵ and E = 100 GN/m². if the rod is free to expand, the thermal stress developed in it is:

Options:

A . 100 kN/m²

B . 240 kN/m²

C . Zero

D . Infinity

Answer: Option C
Answer: (c).Zero

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