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MHT CET 2024 (15 May, Shift 1) · Thermodynamic Processes

Thermodynamic Processes question from MHT CET 2024 (15 May, Shift 1)

Q104MHT CET 2024 · 15 MAY · SHIFT 1Medium

Thermodynamic Processes

A quantity of heat ' $Q$ ' is supplied to monoatomic ideal gas which expands at constant pressure. The fraction of heat converted into work is $\left[\gamma = \frac{C_p}{C_v} = \frac{5}{3}\right]$

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Answer: (c)

At constant pressure $Q = nC_p\Delta T$ and $W = nR\Delta T$ .
$\frac{W}{Q} = \frac{R}{C_p} = 1 - \frac{1}{\gamma} = 1 - \frac{3}{5} = \frac{2}{5}$
So the answer is (c) $2 : 5$ .

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