Consider two systems A and B each having two distinguishable particles. In both the systems

Q. Consider two systems A and B each having two distinguishable particles. In both the systems, each particle can exist in states with energies 0, 1, 2 and 3 units with equal probability. The total energy of the combined system is 5 units. Assuming that the system A has energy 3 units and the system B has energy 2 units, the entropy of the combined system is 𝑘_B ln 𝜆. The value of 𝜆 is           

Ans: 12

Sol: