Question
A CARNOT ENGINE WORKING B/W 270 C & --1230C HAS EFFICIENCY η . IF TEMP OF SINK IS DECREASED BY 50K THE EFFICIENCY BECOMES??
ANS 4η/3
Joshi sir comment
according to the given condition η = 1-(150/300) = 0.5
now after decreasing temperature of sink by 50K
we get the new efficiency = 1-(100/300) = 2/3 = 4*0.5/3 = 4η/3