The second law of thermodynamics implies that:

  1. work is impossible
  2. some energy always becomes less useful in real processes
  3. energy decreases
  4. all energy can be used
Answer

B) some energy always becomes less useful in real processes

Degradation of energy. SLO P-11-C-15 · Understanding

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