First slide

Thermodynamic processes

Question

One mole of an ideal monoatomic gas undergo a thermodynamic cyclic process ABCDA as shown in internal energy (U) and density ( $ρ$ ) graph.
The corresponding temperature (T) versus pressure (p) graph is

Moderate

A
B
C
D

Solution

(a) Here, AB and CD are isothermal and BC and DA are isochoric . Now it is easier to draw T-p graph for the given situation. AB and CD isothermal process, in AB volume increases and in CD volume decreases, BC and DA that constant volume process So. p –T graph straight line passes through origin.

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