Question

Identify the incorrect statement related to a cyclic process

• A. the initial and final conditions always coincide
• B. $Q=W$
• C. $w>0$
• D. $Noneofthese$

Answer 1

The correct option is C $w>0$

Given: Cyclic process

Solution:

1. Cyclic process is a process where the initial and the final conditions coincides as the process forms a closed loop.

2. For a cyclic process, $△U=0$, so $Q=W$ from first law of thermodynamics.

3. Work done is given by area of the loop that is formed. If the direction of loop is clockwise then work done by system is positive and if the direction of loop is anticlockwise then work done by system is negative.

Hence the correct option is C.