Question

What is a real life example of the second law of thermodynamics?

Answer 1

Hint :Thermodynamics is a branch of science which deals with work done, heat, internal energy on a system by surroundings or on surroundings by the system. Thermodynamics have three laws out of which the second law of thermodynamics states that the net entropy of a system always increases and never decreases.

Complete Step By Step Answer:
As we know, thermodynamics is a branch of science which deals with work done, heat, internal energy on a system by surroundings or on surroundings by the system.
Thermodynamics has three laws and the second law of thermodynamics states that the entropy of a system never decreases and it is always positive.
Entropy refers to the measure of the molecular disorder or we can say the randomness of a system.
Real life Example of second law of thermodynamics is that:
When we put an ice cube in a cup with water at room temperature. The water releases off heat and the ice cube melts. Hence, the entropy of water decreases. The ice cube then absorbs the same amount of heat which was released by water and therefore its entropy increases. The entropy increased in this process is much greater than the entropy decreased.
Therefore we can say that, there is a net increase in the entropy.

Note :
The first law of thermodynamics states that energy can neither be created nor be destroyed. Second law of thermodynamics states that the net entropy of a system always increases and never decreases. The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero.