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Graphs between P-V diagram for isothermal and adiabatic processes are drawn. The relation between their slopes will be :-
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Important Questions on Thermodynamics
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An ideal gas is taken round the cycle ABCA. In the cycle the amount of work done involved is:-
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One mole ideal gas is compressed adiabatically at 27ºC. Its temperature becomes 102ºC. The work done in this process will be :- ( = 1.5)
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The volume of a gas expands by 0.25 m3 at a constant pressure of 103 Nm-2. The work done is equal to (magnitude):
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The process in which the heat given to a system is completely transformed into work is for ideal gas :-
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The volume of a poly-atomic gas compressed adiabatically to of the original volume. If the original pressure of the gas is P0 the new pressure will be:
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In an adiabatic process the quantity which remains constant is :-
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calories of heat is supplied to raise the temperature of of air from to without any change in its volume. The change in internal energy per gram of air is,
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According to the second law of thermodynamics:
