One mole of an ideal gas has internal energy given by U = U 0 + 2 P V , where P is the pressure and V is the volume of the gas. U 0 is a constant. This gas undergoes the quasi-static cyclic process A B C D as shown in the U - V diagram The

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One mole of an ideal gas has internal energy given by U = U 0 + 2 P V , where P is the pressure and V is the volume of the gas. U 0 is a constant. This gas undergoes the quasi-static cyclic process A B C D as shown in the U - V diagram The molar heat capacity of the gas at constant pressure is

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Correct answer: B. 3 R

Given relation for internal energy is U = U 0 + 2 P V . For this cyclic process change in internal energy is given by ∆ U = 2 ∆ P V = 2 R ∆ T ⇒ C V = 2 R ⇒ C p = 3 R

One mole of an ideal gas has internal energy given by U = U 0 + 2 P V , where P is the pressure and V is the volume of the gas. U 0 is a constant. This gas undergoes the quasi-static cyclic process A B C D as shown in the U - V diagram The molar heat capacity of the gas at constant pressure is

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