Advertisements
Advertisements
प्रश्न
Differentiate between the reversible and irreversible processes.
Advertisements
उत्तर
| Sr. No. | Reversible process | Irreversible process |
| i. | A reversible process is a change that can be retraced in a reverse (opposite) direction. | An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. |
| ii. | The path of a reversible process is the same in the forward and the reverse direction. | The path of an irreversible process is not the same in the forward and the reverse direction. |
| iii. | Reversible changes are very slow and there is no loss of any energy in the process. | There is a permanent loss of energy from the system due to friction or other dissipative forces in an irreversible process. |
| iv. | The system comes back to its initial state after it is taken along the reverse path. | The change of state depends upon the path taken to change the state during an irreversible process. |
| v. | Reversible processes are ideal processes. | Irreversible processes are real processes. |
| vi. |
p-V diagram:
|
p-V diagram:
|
संबंधित प्रश्न
A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Figure

Its volume is then reduced to the original value from E to F by an isobaric process. Calculate the total work done by the gas from D to E to F
Give an example of some familiar process in which heat is added to an object, without changing its temperature.
An ideal gas is taken through an isothermal process. If it does 2000 J of work on its environment, how much heat is added to it?
Heating a gas in a constant volume container is an example of which process?
Draw a p-V diagram of the irreversible process.
State the assumptions made for thermodynamic processes.
Explain graphically (i) positive work with varying pressure, (ii) negative work with varying pressure, and (iii) positive work at constant pressure.
Write a note on free expansion.
The V-T diagram of an ideal gas which goes through a reversible cycle A→B→C→D is shown below. (Processes D→A and B→C are adiabatic)

The corresponding PV diagram for the process is (all figures are schematic)
In an isochoric process, we have ____________.
Give an expression for work done in an isothermal process.
Apply first law for an isobaric process.
Give the equation of state for an adiabatic process.
What is meant by a reversible and irreversible processes?
Consider the following cyclic process consist of isotherm, isochoric and isobar which is given in the figure.

Draw the same cyclic process qualitatively in the V-T diagram where T is taken along the x-direction and V is taken along the y-direction. Analyze the nature of heat exchange in each process.
For a given ideal gas 6 × 105 J heat energy is supplied and the volume of gas is increased from 4 m3 to 6 m3 at atmospheric pressure. Calculate
- the work done by the gas
- change in internal energy of the gas
- graph this process in PV and TV diagram
A monoatomic gas of pressure p having volume V expands isothermally to a volume 2V and then adiabatically to a volume 16V. The final pressure of the gas is ____________.
`("ratio of specific heats" = 5/3)`
Among the amount of heat absorbed and the amount of work done by a system, ______
An ideal gas is made to go from a state A to stale B in the given two different ways (see figure) (i) an isobaric and then an isochoric process and (ii) an isochoric and then an isobaric process. The work done by gas in the two processes are W1 and W2 respectively. Then,

An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas?
We consider a thermodynamic system. If `Delta"U"` represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
Consider P-V diagram for an ideal gas shown in figure.

Out of the following diagrams (figure), which represents the T-P diagram?
![]() (i) |
![]() (ii) |
![]() (iii) |
![]() (iv) |
In a certain thermodynamical process, the pressure of a gas depends on its volume as kV3. The work done when the temperature changes from 100°C to 300°C will be ______ nR, where n denotes number of moles of a gas.
Explain the thermodynamic process.
When an inflated ballon is suddenly burst, why is the emerging air slightly cooled?
Explain how can a gas be expanded at constant temperature.






