A steel rod with y = 2.0 10^ 11 Nm^ -2 and =10^ -5 °C^ -1 of length 4 m and area of cross-section 10 cm^2 is...

Question

A steel rod with y = 2.0 10^ 11 Nm^ -2 and =10^ -5 °C^ -1 of length 4 m and area of cross-section 10 cm^2 is heated from 0°C to 400°C, without being allowed to extend. The tension produced in the rod is x 10^5 N, the value of x is ............

Accepted Answer

8

JEE Main 2021 Physics question

Solution