Question

In each of the following question, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer:

Assertion (A): There is a natural asymmetry between converting work to heat and converting heat to work.
Reason (R): No process is possible in which the sole result is the absorption of heat from a reservoir and its complete conversion into work.

• A. If both (A) and (R) are correct, and (R) is the correct explanation for (A).
  
• B. If the both (A) and (R) are correct, but (R) is not the correct explanation for (A).
  
• C. If (A) is correct, but (R) is incorrect.
  
• D. If (A) is incorrect, but (R) is correct.
  

Answer 1

The correct option is A If both (A) and (R) are correct, and (R) is the correct explanation for (A).


(A) is true; (R) is true; (A) is the correct explanation for (R).
There is a natural asymmetry between converting work to heat and converting heat to work. No process is possible in which the sole result is the absorption of heat from a reservoir and its complete conversion into work. This is in accordance with the second law of thermodynamics.