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Q. No.One mole of a diatomic ideal gas undergoes a cyclic process \(ABC\) as shown in figure. The process \(BC\) is adiabatic. The temperatures at \(A,B\) and \(C\) are \(400~\text{K},800~\text{K}\) and \(600~\text{K}\) respectively. Choose the correct statement:
| 1. | The change in internal energy in the process \(CA\) is \(700~{R}\) |
| 2. | The change in internal energy in the process \(AB\) is \(-350~{R}\) |
| 3. | The change in internal energy in the process \(BC\) is \(-500~R\) |
| 4. | The change in internal energy in the whole cyclic process is \(250~R\) |
Subtopic: Cyclic Process |
From NCERT
JEE
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An ideal gas goes through a reversible cycle \({a}\rightarrow{b}\rightarrow{c}\rightarrow{d}\) has the \({V \text- T}\) diagram as shown below. Process \({d}\rightarrow{a}\) and \({b}\rightarrow{c}\) are adiabatic.
The corresponding \({P \text- V}\) diagram for the process is (all figures are schematic and not drawn to scale):
The corresponding \({P \text- V}\) diagram for the process is (all figures are schematic and not drawn to scale):
| 1. |  |
3. |  |
| 2. |  |
4. |  |
Subtopic: Cyclic Process |
From NCERT
JEE
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A sample of an ideal gas is taken through the cyclic process \(ABCA\) as shown in the figure. It absorbs, \(40~\text{J}\) of heat during part \(AB\), no heat during \(BC\), and rejects \(60~\text{J}\) of heat during \(CA\). A work of \(50~\text{J}\) is done on the gas during part \(BC\). The internal energy of the gas at \(A\) is \(1560~\text{J}\). The work done by the gas during the part \(CA\) is:
1. \(20~\text{J}\)
2. \(30~\text{J}\)
3. \(-30~\text{J}\)
4. \(-60~\text{J}\)
1. \(20~\text{J}\)
2. \(30~\text{J}\)
3. \(-30~\text{J}\)
4. \(-60~\text{J}\)
Subtopic: Cyclic Process |
62%
From NCERT
JEE
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Given a cyclic process shown in an indicator diagram using SI units. The work done by the gas during the process is:
| 1. | \(300\) units | 2. | \(-300\) units |
| 3. | \(600\) units | 4. | \(-600\) units |
Subtopic: Cyclic Process |
67%
From NCERT
JEE
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