Q. No.The P-V graph of an ideal gas cycle is shown here as below. The adiabatic process is described by
(1) AB and BC
(2) AB and CD
(3) BC and DA
(4) BC and CD
An ideal monoatomic gas is taken round the cycle as shown in following P-V diagram. The work done during the cycle is -
(1) PV
(2) 2 PV
(3) 4 PV
(4) Zero
A system changes from the state (P1, V1) to (P2, V2) as shown in the figure. What is the work done by the system ?
(1) 7.5 × 105 joule
(2) 7.5 × 105 erg
(3) 12 × 105 joule
(4) 6 × 105 joule
Carbon monoxide is carried around a closed cycle \(abc\) in which \(bc\) is an isothermal process as shown in the figure. The gas absorbs \(7000 ~\text J\) of heat as its temperature increases from \(300 ~\text K\) to \(1000 ~\text K\) in going from \(a\) to \(b.\) The quantity of heat rejected by the gas during the process \(ca\) is:
1. \(4200~\text J\)
2. \(5000~\text J\)
3. \(9000~\text J\)
4. \(9800~\text J\)
A sample of ideal monoatomic gas is taken round the cycle CBAC as shown in the figure. The work done during the cycle is
(1) Zero
(2) 3 PV
(3) 6 PV
(4) 9PV
When a system is taken from state i to a state f along path iaf, Q = 50 J and W = 20 J.
If W = –13 J for the curved return path fi, Q for this path is -
1. 33 J
2. 23 J
3. – 7 J
4. – 43 J
Which one of the following is correct for one complete cycle of a thermodynamic process on a gas as shown in the \((P-V)\) diagram?
| 1. | \(\Delta E_{int}= 0, Q<0\) | 2. | \(\Delta E_{int}= 0, Q>0\) |
| 3. | \(\Delta E_{int}>0, Q<0\) | 4. | \(\Delta E_{int}< 0, Q>0\) |
An ideal gas is taken from point A to the point B, as shown in the P-V diagram. The work done in the process is -
1.
2.
3.
4.
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from A → B → C is 30J and 40J heat is given to the system. The change in internal energy between A and C is
(1) 10 J
(2) 70 J
(3) 84 J
(4) 134 J
Consider a process shown in the figure. During this process the work done by the system -
(1) Continuously increases
(2) Continuously decreases
(3) First increases, then decreases
(4) First decreases, then increases
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