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Heat and Thermodynamics question

2003 · Q166
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Heat and Thermodynamics question

2003 · Q166

NEETPhysicsHeat and ThermodynamicsMCQ+4 / −1
An ideal gas heat engine operates in a Carnot cycle between 227oC and 127oC. It absorbs 6 kcal at the height temperature. The amount of heat (in kcal) converted into work is equal to
  1. A
    4.8
  2. B
    3.5
  3. C
    1.6
  4. D
    1.2
View written solutionFree

Correct answer: D

Efficiency of Carnot engine

=WQ1=1−T2T1 = {W \over {{Q_1}}} = 1 - {{{T_2}} \over {{T_1}}}=Q1​W​=1−T1​T2​​

W6=1−400500=15⇒W=65=1.2 kcal{W \over 6} = 1 - {{400} \over {500}} = {1 \over 5} \Rightarrow W = {6 \over 5} = 1.2\,kcal6W​=1−500400​=51​⇒W=56​=1.2kcal

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