A refrigerator does not violate the second law because:

  1. heat flows naturally from cold to hot
  2. it has 100% efficiency
  3. work is done on it to move heat from cold to hot
  4. it creates cold
Answer

C) work is done on it to move heat from cold to hot

External work is supplied. SLO P-11-C-15 · Understanding

Physics MCQ · More Heat Engines, Second Law and Entropy MCQs · Practise