Question

Let η₁ is the efficiency of an engine at T₁ = 447°C and T₂ = 147°C while η₂ is the 2 efficiency at T₁ = 947°C and T₂ = 47°C. The \(\frac{\eta_1}{\eta_2}\) ratio will be:

(A) 0.41

(B) 0.56

(C) 0.73

(D) 0.70

Answer 1

Correct option is (B) 0.56