What is a reversible process? What are its features?

Hint: A process is said to be reversible when it occurs by an infinitesimal change in the state of the function. The system is something which we observe while the surrounding is an environment except for the system.

Complete step by step solution:
-A reversible process is a process which can be turned into any direction by applying the infinitesimal change in the system by its surroundings.
-It is a process which can be reversed after it has taken place when it is reversed it allows the system and the surrounding to return to its initial state.
-During the reversible process, the system is in thermodynamic equilibrium by the surrounding of the system. After being reversed it does not leave any changes in the system or in the surroundings. As the reversible process takes infinite time for completion of the reversible process hence there is no such thing as the perfect reversible process.
-During the reversible reaction, there should not be any loss of the energy due to convection, conduction or radiation during the cycle of the operation. And all the substances which undergo a reversible change should be in thermodynamic equilibrium with its surroundings. Examples of reversible processes are an extension of springs, expansion of gases etc.

Note: The presence of equilibrium between the system and the surrounding is only possible in a reversible process. During the irreversible process, the volume or the pressure of the system does not have the time to reach equilibrium as there is an instantaneous change in the system.