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Physics

Heat

Easy

Question

A thermodynamic process of one mole ideal monoatomic gas. The efficiency of cyclic process ABCA will be

25%
12 .5%
50%
$\frac{100}{13} %$

The correct answer is: $100 over 13 straight percent sign$

$W equals 1 half P subscript 0 V subscript 0 equals 1 half P subscript 0 V subscript 0 text Heat supplied end text equals Q subscript A B end subscript plus Q subscript B C end subscript equals C subscript V T subscript 0 plus C subscript P 2 T subscript 0 equals 13 over 2 R T subscript 0 therefore space of 1em text Efficiency end text equals fraction numerator 1 half P subscript 0 V subscript 0 over denominator 4 P subscript 0 V subscript 0 end fraction cross times 100 equals 1 over 13 cross times 100 equals 7.7 straight percent sign$

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