Thermodynamics ...

Which of the following p – V diagrams best represents an isothermal process

Ideal gas undergoes an adiabatic change in its state from (p₁, V₁, T₁) to (p₂, V₂ , T₂ ). The work done (W) in the process is (µ = number of molecules, C_p and C_v, are molar specific heats of gas)

We consider a thermodynamic system. If AU represents the increase in its internal energy and W the work done by the system, which of the following statements is true?

In an adiabatic change, the pressure and temperature of monoatomic gas are related with relation p ∝ T^c , where, C is equal to

A cyclic process ABCDA is shown below in the given p–V diagram. In the following answer the one that represents the same process as in p–T diagram.

The work done, W during an isothermal process in which 1 mole of the gas expands from an initial volume V₁ to a fmal volume V₂ is given by (R gas constant, T = temperature)

A container having 1 mole of a gas at a temperature 27°C has a movable piston which maintains at constant pressure in container of 1 atm. The gas is compressed until temperature becomes 127°C. The work done is (C_p for gas is 7.03 cal/mol–K)

Helium gas goes through a cycle ABCDA (consisting of two isochoric and isobaric lines) as shown in the figure. Efficiency of this cycle is nearly (Assume the gas to be close to ideal gas ).

The efficiency of Carnot heat engine is 0.5, when the temperature of the source is T₁ and that of sink is T₂. The efficiency of another Carnot heat engine is also 0.5. The temperatures of source and sink of the second engine are respectively