engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Mechanical Properties of Solids Elastic behaviour of solids
A metallic bar of Young’s modulus, 0.5 × 1011 N m–2 and coefficient of linear thermal expansion 10–5 °C–1 , length 1 m and area of cross-section 10–3 m2 is heated from 0°C to 100°C without expansion or bending. The compressive force developed in it is :
1
5 × 103 N
2
50 × 103 N
3
100 × 103 N
4
2 × 103 N