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Draw a p-V diagram showing positive work with varying pressure.

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प्रश्न

Draw a p-V diagram showing positive work with varying pressure. 

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उत्तर

p-V diagram showing positive work with varying pressure:

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अध्याय 4: Thermodynamics - Short Answer I

संबंधित प्रश्न

Explain why The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.


Answer in brief.

Why should a Carnot cycle have two isothermal two adiabatic processes?


State the assumptions made for thermodynamic processes.


Differentiate between the reversible and irreversible processes.


An ideal gas of volume 2 L is adiabatically compressed to (1/10)th of its initial volume. Its initial pressure is 1.01 x 105 Pa, calculate the final pressure. (Given 𝛾 = 1.4) 


Explain the thermodynamics of the isochoric process.  


When a cycle tyre suddenly bursts, the air inside the tyre expands. This process is ____________.


Give an expression for work done in an isothermal process.


Apply first law for an adiabatic process.


Give the equation of state for an adiabatic process.


What is a cyclic process?


Derive the work done in an isothermal process.


Explain in detail an adiabatic process.


Derive the work done in an adiabatic process.


Explain in detail the isochoric process.


What are the limitations of the first law of thermodynamics?


In a petrol engine, (internal combustion engine) air at atmospheric pressure and temperature of 20°C is compressed in the cylinder by the piston to `1/8` of its original volume. Calculate the temperature of the compressed air. (For air γ = 1.4)


Among the amount of heat absorbed and the amount of work done by a system, ______


One mole of an ideal gas with `gamma` = 1.4 is adiabatically compressed so that its temperature rises from 27° C to 47° C. The change in the internal energy of the gas is (R = 8.3 J/mol.K) ____________.


For an isothermal expansion of a perfect gas, the value of `(Delta "P")/"P"` is equal to ____________.


In an isothermal process, the volume of an ideal gas is halved. One can say that ____________.


Assertion: Equal volumes of monatomic and polyatomic gases are adiabatically compressed separately to equal compression ratio `("P"_2/"P"_1)`. Then monatomic gas will have greater final volume.

Reason: Among ideal gases, molecules of a monatomic gas have the smallest number of degrees of freedom.


Ideal gas for which 'ϒ' = 1.5 is suddenly compressed to `1/4`th of its initial volume. The ratio of 4 the final pressure to the initial pressure is ______.

 `(ϒ = "C"_"p"/"C"_"v")`


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 how can a gas be expanded at constant temperature.


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