Entropy change in Irreversible Process | video in HINDI

In this Physics video lecture in HINDI we explained how entropy changes in irreversible processes in compared to a reversible process. Entropy decreases in irreversible process. To prove that we used the concept that the efficiency of a reversible engine is the maximum and is equal to (Th - Tc)/Th. The efficiency of an irreversible engine is (Qh-Qc)/Qh. With theses information we can prove that entropy increases in irreversible process. ******************************* Click to visit the homepage of our channel :    / @edupoint.physics   EduPoint, Dam Road, Chandil, Dist- Seraikela-Kharsawan, Jharkhand, India.