During an adiabatic reversibly expansion of an ideal gas

During an adiabatic reversible expansion of an ideal gas

For adiabatic reversible expansion of an ideal gas the expression relating pressure and volume of the gas is -

For adiabatic reversible expansion of an ideal gas the expression relating pressure and volume of the gas is -

For an adiabatic reversible expansion of a perfect gas DeltaP//P is equal to

An adiabatic expansion of an ideal gas always has