If the ratio of the absolute temperature of the sink and source of a Carnot engine is changed from 2: 3 to 3: 4 , the efficiency of the engine changes by

Step-by-step solution

For carnot engine, aligned & ₁=1- T₂ T₁ =1- 2 3 = 1 3 & ₂=1- T₂^ T₁^ =1- 3 4 = 1 4 & % change in = ₁- ₂ ₁ 100 & = 1 3 - 1 4 1 3 100=25 % aligned