#10 | Solved Example: 3
(Physics) > Thermodynamics
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In given process dW = 0, dQ < 0 then for a gas

1.  Temperature -  increases

2.  Volume - decreases

3.  Pressure - decreases

4.  Pressure - increases

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The ratio of the relative rise in pressure for adiabatic compression to that for isothermal compression is

(1) γ

(2) 1γ

(3) 1-γ

(4) 11-γ

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The variation of pressure versus temperature of an ideal gas is shown in the given diagram. From this diagram, one can conclude that

                 

1.  Volume increases continuously

2.  Volume decreases continuously

3.  Volume first increases then decreases

4.  Volume first decreases, then increase

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The variation of density (p) of gas with its absolute temperature (T) at constant pressure is best represented by the graph

1.        2.  

3.        4.  

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An ideal gas with adiabatic exponent y is heated at constant pressure and it absorbs Q heat. What fraction of this heat is used to perform external work?

1.  γ

2.  γγ

3.  1 - 1γ

4.  γ - 1

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