Q. No.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
Six moles of an ideal gas perform a cycle shown in figure. If the temperature are TA = 600 K, TB = 800 K, TC = 2200 K and TD = 1200 K, the work done per cycle is -
(1) 20 kJ
(2) 30 kJ
(3) 40 kJ
(4) 60 kJ
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