When an ideal monoatomic gas is heated at constant pressure, fraction of heat energy supplied which increases the internal energy of gas, is

For monoatomic gasγ=CpCv=53and for constant pressure process ∆Q=nCpdTand ∆U=nCV∆T∆U∆Q=CVCP=1γ=35i.e. fraction of heat energy to increase the internal energy be 3/5