Home Physics Thermodynamics Mix Pressure versus density graph of an ideal ga…
Physics Thermodynamics Mix MCQ (Single Correct)

Pressure versus density graph of an ideal gas is shown in figure –

A
During the process AB work done by the gas is positive
B
During the process AB work done by the gas is negative
C
During the process BC internal energy of the gas is increasing
D
None of these

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The correct answer is:
D

During AB, ρ and hence V is constant.

Therefore, work done is zero.

During BC, P ∝ ρ i.e., T

and hence, U is constant

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