A reversibleheatengine A(basedon carnot cycle ) absorbs heat froma reservoirat 1000 Kand rejects heatto a reservoir at T_(2). A secondreversibleengine B absorbs, the sameamountof heatas rejected by the engine A, from thereservoir at T_(2) and rejectsenergytoa reservoir at 360 K.If the efficienicesof engines A and B are thesame then thetemperature T_(2) is .

A reversibleheatengine A(basedon carnot cycle ) absorbs heat froma res

1.	A reversibleheatengine A(basedon carnot cycle ) absorbs heat froma reservoirat 1000 Kand rejects heatto a reservoir at T_(2). A secondreversibleengine B absorbs, the sameamountof heatas rejected by the engine A, from thereservoir at T_(2) and rejectsenergytoa reservoir at 360 K.If the efficienicesof engines A and B are thesame then thetemperature T_(2) is .
Answer» 680 K 640 K 600 K none SOLUTION :For heatengines A:`eta= (1000- T_(2))/(1000) rArreta_(B) = (T_(2) - 360)/(T_(2))` `eta_(A) = eta_(B)` `So(1000-T_(2))/(1000)=(T_(2) - 360)/(T_(2)) = T_(2) = sqrt(360 xx 1000)=600 K`