Q.
A gas undergoes a process according to the graph. $P$ is pressure, $V$ is volume, $W$ is work done by the gas, $\Delta U$ is change in internal energy of the gas and $\Delta Q$ is heat given to the system. Match the two columns.
Column I
Column II
A
For process AB
1
$\Delta U>0, \Delta Q>0$
B
For process BC
2
$\Delta U<0, \Delta Q<0$
C
For process CD
3
$\Delta Q \times \Delta U \times W=0$
D
For process DA
4
$\Delta Q \times \Delta U<0$
| Column I | Column II | ||
|---|---|---|---|
| A | For process AB | 1 | $\Delta U>0, \Delta Q>0$ |
| B | For process BC | 2 | $\Delta U<0, \Delta Q<0$ |
| C | For process CD | 3 | $\Delta Q \times \Delta U \times W=0$ |
| D | For process DA | 4 | $\Delta Q \times \Delta U<0$ |
Thermodynamics
Solution: