engineering recuitment BMC Sub Engineer Mock Test 2024 Thermodynamics First Law of Thermodynamics Statement of First Law of Thermodynamics
An ideal gas goes from state A to state B via three different processes as indicated in the P-V diagrams:
If Q1, Q2, Q3 indicates the heat absorbed by the gas along the three processes and ΔU1, ΔU2, ΔU3 indicates the changes in internal energy along the three processes respectively, then
1
Q1 > Q2 > Q3 and ΔU1 = ΔU2 = ΔU3
2
Q3 > Q2 > Q1 and ΔU1 = ΔU2 = ΔU3
3
Q1 = Q2 = Q3 and ΔU1 > ΔU2 > ΔU3
4
Q3 > Q2 > Q1 and ΔU1 > ΔU2 > ΔU3
5
None of the above