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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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

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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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पाठ 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.


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


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?


For work done to be reversible, the process should be ______ 


Heating a gas in a constant volume container is an example of which process?


Draw a p-V diagram of the irreversible process. 


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


State the assumptions made for thermodynamic processes.


3 mole of a gas at temperature 400 K expands isothermally from an initial volume of 4 litres to a final volume of 8 litres. Find the work done by the gas. (R = 8.31 J mol-1 K-1)  


Explain thermodynamics of the adiabatic process.  


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


When food is cooked in a vessel by keeping the lid closed, after some time the steam pushes the lid outward. By considering the steam as a thermodynamic system, then in the cooking process


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)


Apply first law for an adiabatic process.


Derive the work done in an isothermal process.


Derive the work done in an adiabatic process.


In an adiabatic expansion of the air, the volume is increased by 4%, what is the percentage change in pressure? (For air γ = 1.4)


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.


An ideal gas is taken in a cyclic process as shown in the figure. Calculate

  1. work done by the gas
  2. work done on the gas
  3. Net work done in the 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

  1. the work done by the gas
  2. change in internal energy of the gas
  3. graph this process in PV and TV diagram

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) ____________.


An ideal gas A and a real gas B have their volumes increased from V to 2V under isothermal conditions. The increase in internal energy ____________.


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.


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)

Give any two types of a thermodynamic process.


In the figure shown here, the work done in the process ACBA is ______.


Explain the thermodynamic process.


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