In an adiabatic expansion,the product of pres | vedclass

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(A) For an ideal gas,the equation of state is given by $PV = nRT$.In an adiabatic expansion,the system does work on the surroundings at the expense of

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decreases

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(A) For an ideal gas,the equation of state is given by $PV = nRT$.In an adiabatic expansion,the system does work on the surroundings at the expense of its internal energy.Since the internal energy of an ideal gas depends only on temperature $(U \propto T)$,a decrease in internal energy leads to a decrease in temperature $(T)$.As $n$ and $R$ are constants,if the temperature $(T)$ decreases during the adiabatic expansion,the product $PV$ must also decrease.

In an adiabatic expansion,the product of pressure and volume:

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