The area of cross-section of a railway track is 0.01 m^2. The temperature variation is 10°C. Coefficient of...

Question

The area of cross-section of a railway track is 0.01 m^2. The temperature variation is 10°C. Coefficient of linear expansion of material of track is 10^ -5 /°C. The energy stored per meter in the track is —— J/m. (Young's modulus of material of track is 10^ 11 Nm^ -2 )

Accepted Answer

5

JEE Main 2021 Physics question

Solution