A process becomes reversible when

A process becomes reversible when

Options:

a. it undergoes in the absence of any dissipative effect
b. all the points through the path are at thermodynamic equilibrium
c. it undergoes as a very slow quasi-static process
d. all of the above

Correct Answer: d. all of the above

Explanation

A nature processes are irreversible because they contain dissipative effects where work is transformed into an increase in the internal energy of a system. Therefore the conditions of the mechanical, chemical and thermal equilibrium are not satisfied. In reversible process, there is the absence of any dissipative effect. All the work transferred by the system in a process in a single direction can be returned to the system during the reverse process.

When a process is carried out through a path on which all the points are thermodynamic equilibrium then this process can also be reversed. These processes are called as quasi-static process. These processes are very slow.