Physics Thermodynamics SZABMU 2024
PMDC Verified Question 6 of 54
In which of the following condition, the thermodynamics system does not perform any work?
A
Isothermal condition
B
Adiabatic condition
C
Isochoric condition
D
Isobaric condition
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Isochoric condition
1. Concept:

In physics, thermodynamic work requires a spatial change. Without a change in boundary (volume), no physical work can be transferred to the environment.

2. Formula:

$$W = P \Delta V$$

3. Solution:

  • To perform zero work, the formula requires \(\Delta V = 0\).


  • A process where the volume is artificially or physically locked (such as heating a gas inside a thick, unyielding metal sphere) guarantees \(\Delta V = 0\).


  • This rigidly constrained process is officially termed an Isochoric condition.


4. Why other options are incorrect:

All other listed processes (isothermal, isobaric, adiabatic) inherently involve a changing volume, meaning they mathematically will produce non-zero work.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Thermodynamics MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App