Published by:
CGP EDU Academic Team
Published on: August 13, 2026
For a sample of perfect gas when its pressure is changed isothermally from 
to 
, the entropy change is given by
A
B
C
Text Solution
Verified by ExpertsThe correct answer is:
B
For an ideal gas undergoing reversible expansion, when temperature changes from 
to 
and pressure changes from 
to 
For an isothermal process, 
so, ln1 
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