A carnot engine takes 3×10^6 cal of...
Question
A carnot engine takes 3×10^6 cal of heat from a reservoir at 627∘C and gives it to a sink at 27∘C. The work done by the engine is
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A carnot engine takes ( 3 times 10^{6} ) cal of heat from a reservoir at ( 627^{circ} mathrm{C} ) and gives it to a sink at ( 27^{circ} mathrm{C} . ) The work done by the engine is
(A) ( 4.2 times 10^{6} mathrm{J} )
(B) ( 8.4 times 10^{6} mathrm{J} )
(C) ( 16.8 times 10^{6} mathrm{J} )
(D) zero

NEET/Medical Exams
Physics
Solution
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A carnot engine takes 3×10^6 cal of heat from a reservoir at 627∘C and gives it to a sink at 27∘C. The work done by the engine is
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( {frac{w}{Q_{1}}}{}=frac{T_{2}}{7_{1}} )
( frac{w}{3 times ^{}} times ^{}=1-frac{300}{900}=frac{2}{3} )
( w=2 times 10^{6} mathrm{col} )

(2 times 10^{6} times 4.18J)

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