Refrigerator is an example of:
Correct answer: B. Second law of thermodynamics
- A. First law of thermodynamics
- B. Second law of thermodynamics
- C. Newton's laws of motion
- D. Entropy
Explanation
A refrigerator operates on the principles of the second law of thermodynamics. It uses external work to move heat from a cold space (inside the fridge) to a warmer space (the room), a process that does not occur spontaneously.
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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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