Refrigerator is an example of:
Correct answer: B. Second law of thermodynamics
- A. First law of thermodynamics
- B. Second law of thermodynamics
- C. Newton law of motion
- D. Entropy
Explanation
According to the Second Law of Thermodynamics, heat will always flow spontaneously from hot to cold, and never the other way around. A refrigerator causes heat to flow from cold to hot by inputting work, which cools the space inside the refrigerator.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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