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  1. An ideal gas heat engine operates in a Carnot cycle between 227°C and 127°C. It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to​​
    1. ​1.2
    2. 4.8 ​
    3. 3.5
    4. 1.6
Correct Option: A

Efficiency =
T1 - T2
T1

T1 = 227 + 273 = 500 K ​
T2 = 127 + 273 = 400 K
η =
500 - 400
=
1
5005

Hence, output work = η × Heat input =
1
× 6 = 1.2 kcal
5



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