The efficiency of a camot's engine is 2/5. When the temperature of the source is increased by 20 ^(@)C then its efficiency is found to increase to 9/20. Calculate the temperature of source and sink.

The efficiency of a camot's engine is 2/5. When the temperature of the

1.	The efficiency of a camot's engine is 2/5. When the temperature of the source is increased by 20 ^(@)C then its efficiency is found to increase to 9/20. Calculate the temperature of source and sink.
Answer» SOLUTION :`T _(2) //T_(1) =1-0.4 = 0.6 , 0.45 = 1 - T _(2)// (T _(1) + 20),` solving,` T _(1) = 220 K, T _(2) = 132 K`