27. a box, separated by a movable wall, has twwo compartments filled by a monoatomic gas of cp/c = . initially the volume of the two compartments are equal, but

27. A box, separated by a movable wall, has twwo compartments filled by a monoatomic gas of Cp/C = . Initially the volume of the two compartments are equal, but the pressures are 3P% and Po, respectively. When the wall is al lowed to move, the final pressure in the two compartments become equal. T'he final pres- sure is (NET-June-2017) (a) (2/3) Po (6) 3(2/3)"Po (c)(1+3/P (d) /P (3/) (1+31/), Po Ans -(c)