engineering recuitment BHEL Engineer Trainee Mock Test 2025 Thermodynamics First Law of Thermodynamics Statement of First Law of Thermodynamics
If the work done on a closed system is 40 kJ/kg, and heat rejected from the system is 80 kJ/kg, then its internal energy is _____.
1
increased by 120 kJ/kg
2
decreased by 40 kJ/kg
3
increased by 40 kJ/kg
4
decreased by 120 kJ/kg