engineering recuitment BHEL Engineer Trainee Mock Test 2025 Thermodynamics First Law of Thermodynamics Application of First Law to Closed System
1 m3 of air at a pressure of 10 kg/cm2 is allowed to expand freely to a volume 10 m3. The work done will be
1
9 × 105 kg-m
2
10 × 105 kg-m
3
1 × 105 kg-m
4
zero