Question

A Carnot engine working between 300 K and 600 K has a work output of 800 J per cycle. The amount of heat energy supplied to the engine from the source per cycle is –

• A. 1200 J
• B. 2400 J
• C. 1600 J
• D. 3200 J

Answer 1

Answer: (C)

1600 J

Answer 2

1 – $\frac{Q_{2}}{Q_{1}}$ = 1 – $\frac{T_{2}}{T_{1}}$

$\frac{W}{Q_{1}}$= 1 – $\frac{300}{600}$

̃ $\frac{800}{Q_{1}}$ = $\frac{1}{2}$

Q₁ = 1600 J