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Q.

Internal energy of an ideal gas is given by U=3PV. Then the value of  CpCv of the gas is

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a

53

b

43

c

32

d

75

answer is B.

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Detailed Solution

U=3PV⇒U=3(nRT)But  U=n.Cv.T⇒nCvT=3.nRT⇒Cv=3RBut Cv=Rγ−1⇒Rγ−1=3R⇒γ=43
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