NEET Exam  >  NEET Notes  >  Physics Class 11  >  Thermodynamic Processes

Thermodynamic Processes | Physics Class 11 - NEET PDF Download

Types of Thermodynamic Processes

  • Isobaric process
  • Isochoric process
  • Isothermal process
  • Adiabatic process
  • Quasi-static process

Isobaric Process

”Iso” means the same, and ”baric” means pressure.
Thermodynamic Processes | Physics Class 11 - NEET

The processes during which the pressure of the system remains constant are called isobaric thermodynamic processes.  Suppose there is a fuel in piston and cylinder arrangement. When this fuel burns the pressure of the gases, generated inside the engine. But if the gases are allowed to expand by allowing the piston to move outside, the pressure of the system can be constant.

PV Curve

Thermodynamic Processes | Physics Class 11 - NEET

Practically, it is not possible to attain an ideal constant and constant pressure. An isobaric process is one in which the pressure is constant. The quantity of the gas in an isobaric process remains constant and the work done by the system is directly promotional to the change in volume or temperature of the system.

Isochoric Process

The process, during which the volume of the system remains constant, is an isochoric process. Heating of a gas in a closed cylinder is an example of the isochoric process. The change in temperature for a given amount of heat is determined by the specific heat of the gas at a constant volume.
Work done in an isochoric process
W = ∫ PdV
Here, dV = 0
Therefore, W = 0 

Thermodynamic Processes | Physics Class 11 - NEET

Isothermal Process

Thermodynamic Processes | Physics Class 11 - NEET

In an isothermal process, there is no change in temperature, that means the temperature remains constant.Like when hot water is kept in a thermos flask, if we remove a certain quantity of water from the flask, but keep its temperature constant then the process is said to be an isothermal process.

Adiabatic Process

The process, during which the heat content of the system remains constant, is an adiabatic process. During this process heat neither enters the system nor leaves the system.
For an adiabatic process,
ΔQ = 0
Then according to the first law of thermodynamics,
ΔU + ΔW = ΔQ = 0
where, Q is the heat supplied to the system and W is the work done by the system and U is the internal energy of the system.

Thermodynamic Processes | Physics Class 11 - NEET

Quasi-Static Process

When a process is which system remains close to an equilibrium state at each time, such process will be termed as the quasi-static process or quasi-equilibrium process. For example, if a person is coming down from roof to ground floor with the help of ladder steps then it is a  quasi-static process. But if he jumps from roof to ground floor then it will not be a quasi-static process.

Question For You

Q. The process in which the internal energy of the system remains constant is:
(a) Adiabatic              
(b) Isobaric 
(c) Isochoric               
(d) Isothermal
Ans: (d)
Solution: Internal energy is a function of temperature only. Therefore, in case of an isothermal process, it will be constant.

The document Thermodynamic Processes | Physics Class 11 - NEET is a part of the NEET Course Physics Class 11.
All you need of NEET at this link: NEET
118 videos|470 docs|189 tests
118 videos|470 docs|189 tests
Download as PDF
Explore Courses for NEET exam

How to Prepare for NEET

Read our guide to prepare for NEET which is created by Toppers & the best Teachers
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Download the FREE EduRev App
Track your progress, build streaks, highlight & save important lessons and more!
Related Searches

Semester Notes

,

Objective type Questions

,

Summary

,

Free

,

Thermodynamic Processes | Physics Class 11 - NEET

,

shortcuts and tricks

,

Previous Year Questions with Solutions

,

Thermodynamic Processes | Physics Class 11 - NEET

,

pdf

,

Extra Questions

,

practice quizzes

,

Important questions

,

mock tests for examination

,

study material

,

Thermodynamic Processes | Physics Class 11 - NEET

,

Viva Questions

,

ppt

,

Sample Paper

,

past year papers

,

MCQs

,

video lectures

,

Exam

;