Heat is lost through a flat wall constantly at a rate of $750$W$.$ If the temperatures of the inner and outer surface of the wall are $50\backslash$deg C and $15\backslash$deg C$,$ respectively, the rate of entropy generation inside the wall is $0\mathrm{.}111$ W$/$K $0\mathrm{.}0289$ W$/$K $48\mathrm{.}0$ W$/$K $2\mathrm{.}08$ W$/$K $2\mathrm{.}10$ W$/$K