When 1 mole of gas is heated at Constant volume and heat supplied is 500 J then which of the following is…

When 1 mole of gas is heated at Constant volume and heat supplied is 500 J then which of the following is correct?
  1. $\Delta u=-0 \cdot 5 J, q=-500\rfloor$
  2. $\mathrm{q}=-500 \mathrm{~J}, \Delta \mathrm{u}=0$
  3. $\mathrm{q}=500 \mathrm{~J}, \mathrm{w}=0$
  4. $\mathrm{w}=500 \mathrm{~J}, \Delta \mathrm{u}=0$

Solution

$\mathrm{Q}=500 \mathrm{~J}$, At constant volume, $\Delta \mathrm{V}=0$ $\therefore \mathrm{W}=-\mathrm{P} \Delta \mathrm{V}=0$

Asked in: MHT CET 2020 (20 Oct Shift 1)

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