MCQ
A system of $100\ kg$ mass undergoes a process in which its specific entropy increases from $0.3\ kJ\,kg^{-1}\,K^{-1}$ to $0.4\ kJ\,kg^{-1}\,K^{-1}$ . At the same time, the entropy of the surrounding decreases from $80\ kJ\,K^{-1}$ to $75\ kJ\,K^{-1}$ .
Find the ( $\Delta S)_{universe}$ in $kJK^{-1}$ .
- A$0$
- ✓$5$
- C$10$
- D$15$
