The efficiency of carnot engine working between temperatures 200^@ C and 0^@ C is eta_1. The efficiency of this engine is eta_2 when it work between temperatures 0^@ C and -200^@ C. Then eta_1/eta_2=_____

The efficiency of carnot engine working between temperatures 200^@ C a

1.	The efficiency of carnot engine working between temperatures 200^@ C and 0^@ C is eta_1. The efficiency of this engine is eta_2 when it work between temperatures 0^@ C and -200^@ C. Then eta_1/eta_2=_____
Answer» `1.0` `0.721` `0.577` `0.34` SOLUTION :`T_1`=200+273 =473 K `T_2`=0+273=273 K `T._1`=0+273 =273 K `T._2`=-200+273 =73 K `eta_1=200/473` `eta_2=200/273` `therefore eta_1/eta_2=273/473`=0.577