1.

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

Answer» Heat used in increasing the internal energy is
`Q_(1)=C_(v)dT`, Heat absorbed at constant pressure to increase the temperature by `dT` is `Q_(2)=C_(P)dT`
`therefore(Q_(1))/(Q_(2))=(C_(v))/(C_(P))=(1)/(C_(P)//C_(v))=(1)/(gamma)`
for diatomic gas, `gamma=7//5, therefore (Q_(1))/(Q_(2))=(5)/(7)`


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