Refrigeration is working on the principle of-

option(2)

CONCEPT:

• There are many processes in which energy is conserved and yet they are never observed. The principle which disallows such phenomena which consistent with the first law of thermodynamics is called the second law of thermodynamics.
• The refrigeration cycle is based on the principle of the Second Law of Thermodynamics.

EXPLANATION: 

• This is applicable to a refrigerator. The working substance can absorb heat from the cold body only if work is done on it. If no external work is done, the refrigerator will not work.
• The refrigeration cycle is based on the principle of the Second Law of Thermodynamics that a liquid expanding into a gas extracts heat from the surrounding substance or area. 
•  Clausius Statement: "It is impossible for a self-acting machine, unaided by any external agency, to transfer heat from a body to another a higher temperature"