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Q.

When an ideal diatomic gas is heated at constant pressure, the fraction of heat energy supplied which is used in doing work to maintain pressure constant is

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a

25

b

27

c

72

d

57

answer is C.

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Detailed Solution

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$\frac{d W}{d Q} = 1 - \frac{1}{γ} = 1 - \frac{5}{7} = \frac{2}{7}$

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