Careers360 Logo
JCECE 2025 - Date, Registration, Seat Allotment, Choice Filling, Merit List, Counselling, Cutoff

Graphical Comparison of Thermodynamic Processes - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:35 AM | #JEE Main

Quick Facts

  • 2 Questions around this concept.

Concepts Covered - 1

Graphical Representation Of Work Done In Thermodynamics

1. Constant Volume Process:

Representation on P-V diagram:

This process is represented on the P-V  diagram by a vertical straight line as shown in figure, since V1=V2

Work done during the process:

\mathrm{W = \int_{V_{1}}^{V_{2}} P dv}

\text{But dv = 0 for an isochoric process}

\therefore \mathrm{W = 0}

Thus, work done during constant volume process is zero which is also evident from the P-V diagram as no area is enclosed by the vertical line on P-V diagram.

2. Constant Pressure Process:

Representation on P-V diagram:

During this process the pressure or the gas remains constant therefore it is represented by a horizontal line on P-V diagram. See figure.

Work done during the process:

\\\mathrm{W = \int_{V_{1}}^{V_{2}} P d v} \\\mathrm{But\ P\ is\ constant.} \\ {\therefore \text { Work done }=\mathrm{}P \int_{V_{1}}^{V_{2}} d v=P\left(V_{2}-V_{1}\right)

The work done by the gas during constant pressure process is represented by a rectangle on P-V diagram.

Study it with Videos

Graphical Representation Of Work Done In Thermodynamics

"Stay in the loop. Receive exam news, study resources, and expert advice!"

Books

Reference Books

Graphical Representation Of Work Done In Thermodynamics

Chemistry Part I Textbook for Class XI

Page No. : 165

Line : 25

E-books & Sample Papers

Get Answer to all your questions

Back to top