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11.Thermodynamics
easy
A system goes from $A$ to $B$ via two processes $I$ and $II$ as shown in figure. If $\Delta {U_1}$ and $\Delta {U_2}$ are the changes in internal energies in the processes $I$ and $II$ respectively, then
A
$\Delta {U_{{\rm{II}}}} > \Delta {U_{\rm{I}}}$
B
$\Delta {U_{{\rm{II}}}} < \Delta {U_{\rm{I}}}$
C
$\Delta {U_{\rm{I}}} = \Delta {U_{{\rm{II}}}}$
D
Relation between $\Delta {U_{\rm{I}}}$ and $\Delta {U_{{\rm{II}}}}$ can not be determined
(AIEEE-2005) (AIPMT-2013) (AIIMS-2014)
Solution
(c) As internal energy is a point function therefore change in internal energy does not depends upon the path followed
i.e. $\Delta {U_{\rm{I}}} = \Delta {U_{{\rm{II}}}}$
Standard 11
Physics
