Heat flows from a body at 300 K to one at 400 K only if:

  1. the 300 K body is larger
  2. work is done (e.g. by a heat pump)
  3. never, even with work
  4. the bodies touch
Answer

B) work is done (e.g. by a heat pump)

Clausius statement. SLO P-11-C-15 · Understanding

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