Question

0.35 The carnot engine absorbs 1000 calories of heat from a source & rejects 800 calorie of heat to the sink per cycle. What is its thermal efficiency? a. 20% b. 30% C. 40% d. 50%​
Genius please help
the correct option

Answer 1

Answer:

20%

Explanation:

Carnot Engine Efficiency ⇒ $\frac{Work}{Qhigh}$

Qhigh = 1000

Qlow = 800

Work = 1000-800

Work = 200

200/1000 = 0.2

0.2 = 20%