In the diagram, the graph between volume and pressure for a thermodynamic process is shown. If UA=0 , UB=20 J and the energy given from B to C is 30 J , then at the stage of C , the internal energy of the system is

Question

In the diagram, the graph between volume and pressure for a thermodynamic process is shown. If UA=0 , UB=20 J and the energy given from B to C is 30 J , then at the stage of C , the internal energy of the system is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-p9oltajmk0m8omfr.jpg" /> (A) 50 J (B) 60 J (C) 30 J (D) 10 J

Tardigrade Admin · Accepted Answer

WB C=0 ∴ Δ UB C=Δ Q UC-UB=30 UC-20=30 UC=50 J

Q. In the diagram, the graph between volume and pressure for a thermodynamic process is shown. If $U_{A} = 0$ , $U_{B} = 20 J$ and the energy given from $B$ to $C$ is $30 J$ , then at the stage of $C$ , the internal energy of the system is

$50 J$

$60 J$

$30 J$

$10 J$

$W_{BC} = 0$
$∴ Δ U_{BC} = Δ Q$
$U_{C} - U_{B} = 30$
$U_{C} - 20 = 30$
$U_{C} = 50 J$

Q. In the diagram, the graph between volume and pressure for a thermodynamic process is shown. If UA​=0 , UB​=20J and the energy given from B to C is 30J , then at the stage of C , the internal energy of the system is

50J

60J

30J

10J