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Question

A Carnot engine operates between two reservoirs of temperature 900K and 300K. The engine performs 1200J of work per cycle. The heat energy inJ delivered by the engine to the low-temperature reservoir, in a cycle, is


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Solution

Step 1. Given data

Temperature, T1=900K

Temperature, T2=300K

Work done,W=1200J

Step 2. Finding the Efficiency, η

By using the formula for Efficiency

η=1-T2T1

η=1-300900

η=23

Step 3. Finding the heat delivered, QH

By using the formula,η=WQH

23=1200QH

QH=600J

Therefore, the heat delivered to the engine is 600J


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