railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics First Law of Thermodynamics Application of First Law to Closed System
A stationary mass of gas is compressed without friction from an initial state of 0.3 m3 and 0.105 MPa to a final state of 0.15 m3 and 0.105 MPa, the pressure remaining constant during the process. There is a transfer of 37.6 kJ of heat from the gas during the process. The internal energy of the gas changes by
1
-21.85 kJ
2
3.85 kJ
3
-37.6 kJ
4
-15.75 kJ