engineering recuitment HPCL Junior Executive 2025 Mock Test Thermodynamics First Law of Thermodynamics Statement of First Law of Thermodynamics
A steel ball of mass 1 kg and specific heat 0.4 kJ/kgK is at a temperature of 60°C. It is dropped into 1 kg water at 20°C. The final steady state temperature of water is
1
23.5°C
2
30°C
3
35°C
4
40°C