Second Law Of Thermodynamics

Second Law Of Thermodynamics

The Second Law of thermodynamics states that:

“There is always an increase in the entropies of all the participating bodies when any real process takes place.”

In an ideal case of a reversible process also the overall sum remains the same. The increase in the entropy results in many changes like irresponsibility of natural processes and asymmetry between the previous state of the bodies and the future state.

In an ideal case of a reversible process also the overall sum remains the same. The increase in the entropy results in many changes like irreversibility of natural processes and asymmetry between the previous state of the bodies and the future state.

This law technically regards to a situation in which earlier the bodies are in thermal equilibrium and after that, it is left in contact to attain a new equilibrium. There is an increase in the entropy because of many processes like dispersion, spread, etc. The second law of thermodynamics is a surprising finding which is accepted everywhere as a thermodynamic theory.

The second law is basically about the thermodynamic radiation of bodies and matter. Which is in its thermodynamic equilibrium at first and are separated by the walls which allow or resists the passage of matter and energy.

Second Law of Thermodynamics

The law says that the walls of the container are changed by the application of external force and therefore making it less restrictive and constraining.

The second law of thermodynamics also states that all the processes have a particular direction, and the energy has both quantities as well as quality.

To express the second law of thermodynamics here are some definitions which must be known:

Heat Reservoir:

Heat reservoirs are basically of two types: High-temperature heat reservoir and a low-temperature heat reservoir. Sometimes heat is transferred from a high-temperature reservoir that’s why it is called heat source. The heat transfer to a low-temperature reservoir is called heat sink.

Work Reservoir:

Work reservoir is a big system and which has a stable equilibrium. It can allow the transfer of the finite amount of energy without the change in pressure.

Second Law Of Thermodynamics

Experiment exploring the second principle of thermodynamics

There are much more definitions of thermodynamics that should be known before moving further onto the third law of thermodynamics. To make yourself clear and confident in all the concepts try out Byju’s –the learning app on your phone.

 


Practise This Question

Assertion: A room can be cooled by opening the door of a refrigerator in a closed room.
Reason: Heat flows from lower temperature (refrigerator) to higher temperature (room).