MHT CET202615 April 2026Evening ShiftPhysicsThermodynamicsActual
In a cyclic process, work done by the system is
Options
- Azero.
- Bequal to the heat given to system.
- Cmore than the heat given to system.
- Dindependent of heat given to system.
Correct answer
B. equal to the heat given to system.
Step-by-step solution
According to the first law of thermodynamics, Q = U + W . For a cyclic process, the initial and final states of the system are the same, so the change in internal energy is zero ( U = 0 ). Substituting U = 0 into the first law equation gives Q = W . Therefore, the work done by the system is equal to the net heat given to the system. Answer: equal to the heat given to system.