AIIMS 2018 Physics First Law of Thermodynamics MCQ Question

In the given problem, ΔQ represents the heat absorbed by the system, calculated as ΔQ = m × Lᵥ, where m is the mass and Lᵥ is the latent heat of vaporization. The equation ΔQ = Δu + Δw relates the change in internal energy (Δu) to the heat added and the work done, leading to the calculation of Δu as 373 cal after substituting the values. Other options are not applicable as they do not provide relevant information or calculations related to the problem at hand, making option B the only viable choice based on the derived internal energy change.