Physics Thermodynamics ETEA 2023
PMDC Verified Question 24 of 54
Work done during isochoric process is:
A
Zero
B
Maximum positive
C
Negative
D
Maximum negative
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Zero
1. Concept:

In thermodynamics, physical work is only accomplished when a boundary is moved against a force, which manifests as a change in volume.

2. Formula:

$$W = P \Delta V$$

3. Solution:

  • An isochoric process strictly means the volume remains perfectly constant throughout the state change.


  • Mathematically, this means the change in volume \(\Delta V = 0\).


  • Substituting this into the work equation yields \(W = P(0) = 0\).


  • Thus, absolutely zero work is done.


4. Why other options are incorrect:

Work cannot be positive or negative if the piston physically does not move. Maximum work is typically associated with isobaric processes (for the same volume expansion limits).

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