Question

The efficiency of a Carnot engine which operates between the two temperature $T_1 = 500\, K$ and $T_2 = 300\, K$ is

• A. 0.5
• B. 0.25
• C. 0.75
• D. 0.4

Answer 1

Answer: (D)

0.4

Answer 2

Given, $T_{1}=500\, K$
$T_{2}=300\, K$
We know that, efficiency of a Camot engine,
$=\left[1-\frac{T_{2}}{T_{1}}\right] \times 100$
$=\left[1-\frac{300}{500}\right] \times 100$
$=0.4 \times 100$
$=40 \%$