A system goes from A to B via two processes I and II as shown in fig. If $∆{\mathrm{U}}_1$ and $∆{\mathrm{U}}_2$are the changes in internal energies in the process I and II respectively, then

 

• A

  ${\mathrm{\Delta U}}_2<{\mathrm{\Delta U}}_1$

• B

  ${\mathrm{\Delta U}}_2>{\mathrm{\Delta U}}_1$

• C

  ${\mathrm{\Delta U}}_1={\mathrm{\Delta U}}_2$

• D

  relation between $∆{\mathrm{U}}_1$and $∆{\mathrm{U}}_2$cannot be determined.