10. Which is the correct statement

(a)  For an isothermal change PV = constant

(b)  In an isothermal process the change in internal energy must be equal to the work done

(c)   For an adiabatic change P₂/P₁=(V₂/V₁)^γ , where ^γ is the ratio of specific heats

(d)  In an adiabatic process work done must be equal to the heat entering the system

Answer-a

(17)