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There is no work transfer involved in this process
  • a)
    Adiabatic expansion
  • b)
    Isothermal expansion
  • c)
    Polytropic expansion
  • d)
    Free expansion
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
There is no work transfer involved in this processa)Adiabatic expansio...
Free Expansion

Free expansion is a thermodynamic process in which a gas expands into a vacuum without any external work being done. In this process, the gas expands freely and there is no work transfer involved.

Explanation

When a gas expands into a vacuum, there is no external pressure acting on the gas to oppose its expansion. As a result, the gas expands freely and there is no work done by or on the gas. This is because work is defined as the product of external pressure and change in volume, and in a free expansion, the external pressure is zero.

Therefore, free expansion is an isochoric (constant volume) process, and there is no change in internal energy of the gas as there is no heat transfer involved.

Examples

Some examples of free expansion are:

- Opening the valve of a compressed gas cylinder in a vacuum chamber
- Bursting of a balloon in vacuum
- Release of a compressed gas into an evacuated container

Conclusion

Free expansion is a unique thermodynamic process in which a gas expands into a vacuum without any external work being done. As there is no work transfer involved, the process is isochoric and there is no change in internal energy of the gas.
Free Test
Community Answer
There is no work transfer involved in this processa)Adiabatic expansio...
In free expansion the gas is expanded against vacuum and since vacuum has no pressure to offer it's resistance, therefore the work done in this process is zero.
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There is no work transfer involved in this processa)Adiabatic expansionb)Isothermal expansionc)Polytropic expansiond)Free expansionCorrect answer is option 'D'. Can you explain this answer?
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