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Q.

A Carnot engine takes in 3000 k- 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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An Intiative by Sri Chaitanya

a

4⋅2×106J

b

8⋅4×106J

c

16⋅8×106J

d

zero

answer is B.

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Detailed Solution

η=T1−T2T1=900−300900=23 W=ηQ=23×3000×1000×4⋅2 =8⋅4×106J

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