Question

In which process in Carnot's cycle, heat $\left(Q_2\right)$ is released to the sink?

• A. Reversible adiabatic expansion
• B. Reversible adiabatic compression
• C. Reversible isothermal expansion.
• D. Reversible isothermal compression

Answer 1

The correct option is D Reversible isothermal compression

During the process of reversible isothermal compression which is the $3^{\text{rd}}$ step in a Carnot's cycle, the surroundings does work on the working substance and heat is rejected from system to the heat sink.