A Carnot engine has efficiency 40% and its cold reservoir is at 300 K. Its hot reservoir is at:

  1. 375 K
  2. 500 K
  3. 420 K
  4. 750 K
Answer

B) 500 K

1 - TCTH = 0.4 Rightarrow TH = 3000.6 = 500 K. SLO P-11-C-23 · Knowledge

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