One mole of an ideal gas in initial state A undergoes a cyclic process

1.	One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is P0. Choose the correct option(s) from the following.(a) Internal energies at A and B are the same (b) Work done by the gas in process AB is P0 V0 ln 4(c) Pressure at C is P0/4(d) Temperature at C is T0/4
Answer» Correct Answer is: (a) Internal energies at A and B are the same, (b) Work done by the gas in process AB is P₀ V₀ ln 4 Internal energy ∝ absolute temperature. ∴ U_A = U_B . In the isothermal process AB, W = nRT In ( V_f / V_i ) = p₀ V₀ In( V_B / V_A )

One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is P0. Choose the correct option(s) from the following.(a) Internal energies at A and B are the same (b) Work done by the gas in process AB is P0 V0 ln 4(c) Pressure at C is P0/4(d) Temperature at C is T0/4

Answer»

Correct Answer is: (a) Internal energies at A and B are the same, (b) Work done by the gas in process AB is P₀ V₀ ln 4

Internal energy ∝ absolute temperature.

∴ U_A = U_B .

In the isothermal process AB,

W = nRT In ( V_f / V_i ) = p₀ V₀ In( V_B / V_A )

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