A carnot engine takes 5000 kcal of heat from a reservoir at $727°C$  and gives heat to a sink at $127°C.$  The work done by the engine is

Correct Option - 3


Detailed Solution:

T₁ = 727 + 273 = 1000k

T₂ = 127° + 273 = 400 k

Q₁ = 5 × 10³ k cal

$\Rightarrow \frac{600}{1000}=\frac{w}{5000}$                

w = 12.6 × 10⁶ J

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