Calculate internal energy change of a system if work done by the system is 8 J and heat supplied to it is 40…

Calculate internal energy change of a system if work done by the system is 8 J and heat supplied to it is 40 J .
  1. -48 J
  2. -40 J
  3. $32 \mathrm{J}$
  4. 24 J

Solution

$\begin{aligned} & \Delta U=q+w \\ & \Delta U=40 J+(-8 J)=32 J\end{aligned}$

Asked in: MHT CET 2024 (16 May Shift 2)

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