An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is $S_{1}$ and that of the other part is $S_{2}$. Given that $S _{1}> S _{2}$. If the piston is removed then the total entropy of the system will be :
  • A$S _{1} \times S _{2}$
  • B$S _{1} \, - \,S _{2}$
  • C$\frac{ S _{1}}{ S _{2}}$
  • D$S _{1}+ S _{2}$
JEE MAIN 2021, Medium
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