During thermodynamic process, the increase in internal energy of a system is equal to the work done on the system. Which process does the system undergo?

Step-by-step solution

The First Law of Thermodynamics states that the change in internal energy ΔU equals the heat added to the system Q plus the work done on the system W : U = Q + W . Given that ΔU = W , substitution yields W = Q + W , which simplifies to Q = 0 . A process with no heat exchange (Q = 0) is adiabatic. Other processes are incompatible: isothermal implies U = 0 but not necessarily W = 0; isochoric gives W = 0 but not necessarily U = 0 ; isobaric has no inherent constraint linking ΔU and W. The process is adiabatic, corres