ans plz

Dear Student, 
Please find below the solution to the asked query: 
$$\begin{gathered} \mathrm{Heat} \mathrm{energy} \mathrm{required} \mathrm{to} \mathrm{raise} \mathrm{the} \mathrm{temperature}: \\ \mathrm{dQ}=\mathrm{m} \mathrm{C} △\mathrm{t} \\ =0.2 \mathrm{kg} \times 4184 \mathrm{J}/\mathrm{kg}/\mathrm{K} \times {\left(60 - 40\right)}^{\mathrm{o}}\mathrm{C} \\ =16736 \mathrm{J} \\ =16.7 \mathrm{kJ} \\ \mathrm{From} \mathrm{first} \mathrm{law} \mathrm{of} \mathrm{thermodynamics}: \\ \mathrm{dQ}=\mathrm{dU}+\mathrm{p} \mathrm{dV} \\ \mathrm{By} \mathrm{ignorning} \mathrm{expansion} \mathrm{of} \mathrm{gas}, \\ \mathrm{dQ}=\mathrm{dU} \\ \mathrm{Hence}, \mathrm{the} \mathrm{change} \mathrm{in} \mathrm{internal} \mathrm{energy} \mathrm{is}, \\ \mathrm{dU}=\mathrm{dQ}=16.7 \mathrm{kJ} \\ \mathbf{Ans}\mathbf{:}\mathbf{ }\mathbf{Option}\mathbf{ }\mathbf{-}\mathbf{ }\mathbf{\left(}\mathbf{2}\mathbf{\right)} \end{gathered}$$
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