Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure.
Isothermal expansion, 
Adiabatic expansion Which of the following option is not correct?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
From first law of thermodynamics,
In adiabatic expansion, 
During expansion of a gas 
is negative, i.e 
or 
.
We know that, 
Thus, option is incorrect while the remaining options are correct.
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