Question

For which process does $\Delta U=0$ holds true for ideal gas:

• A. Cyclic process
• B. Isothermal process
• C. Isochoric process
• D. Adiabatic process

Answer 1

Answer: (A)

Cyclic process

$△U=0$ holds true for cyclic process. In this process any system starts and returns in same state (thermodynamic). So net change in internal energy turns to be zero.