If in the thermodynamic process shown in the figure, the work done by the system along A  C is 50 J and the change in internal energy during C  A is 30 J, then the heat supplied during A  C is:

         

1. 50 J  2. 20 J
3. 10 J  4. 80 J
Subtopic:  Cyclic Process |
 54%
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An ideal gas is taken through the cycle \(A\rightarrow B\rightarrow C\rightarrow A\) as shown in the figure below. If the net heat supplied to the gas is \(10~\text{J}\), then the work done by the gas in the process \(B\rightarrow C\) is:

                 

1. \(-10~\text{J}\) 2. \(-30~\text{J}\)
3. \(-15~\text{J}\) 4. \(-20~\text{J}\)
Subtopic:  Cyclic Process |
 67%
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An ideal gas undergoes a cyclic process ABCA as shown. The heat exchange between the system and the surrounding during the process will be:

                     

1. 10 J 2. 5 J
3. 15 J 4. 20 J
Subtopic:  Cyclic Process |
 81%
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In the cyclic process shown in the pressure-volume \((P-V)\) diagram, the change in internal energy is equal to:

     

1. πP2-P122

2. πV2-V122

3. π4(P2-P1)(V2-V1)

4. zero

Subtopic:  Cyclic Process |
 75%
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For the indicator diagram given below, which of the following is not correct?

                    

1. Cycle II is a heat engine cycle.
2. Net work is done on the gas in cycle I.
3. Work done is positive for cycle I.
4. Work done is positive for cycle II.

Subtopic:  Cyclic Process |
 61%
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The cyclic process of \(2\) moles of diatomic gas is shown in the figure. Which of the following statements is correct?

 

1.  The process \(BC\) is an isothermal compression.
2.  The work done in the process \(CA\) is \(4 R T_0\)
3.  The work done in the process \(AB\) is zero.
4.  All of these

Subtopic:  Cyclic Process |
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In a cyclic process, the internal energy of the gas:

1. increases 2. decreases
3. remains constant 4. becomes zero
Subtopic:  Cyclic Process |
 56%
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A cyclic process for \(1\) mole of an ideal gas is shown in the \(V\text-T\) diagram. The work done in \(AB, BC\) and \(CA\) respectively is:

           

1.  \(0, R T_2 \ln \left(\frac{V_1}{V_2}\right), R\left(T_1-T_2\right)\)  
2. \(R\left(T_1-T_2\right), 0, R T_1 \ln \frac{V_1}{V_2}\)
3. \(0, R T_2 \ln \left(\frac{V_2}{V_1}\right), R\left(T_1-T_2\right)\)
4. \(0, R T_2 \ln \left(\frac{V_2}{V_1}\right), R\left(T_2-T_1\right)\)
Subtopic:  Cyclic Process |
 58%
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The Carnot cycle (reversible) of gas is represented by a pressure-volume curve as shown in the figure. Consider the following statements:

I. The area \(ABCD\) = The work done on the gas
II. The area \(ABCD\) = The net heat absorbed
III. The change in the internal energy in the cycle = \(0\)

Which of the statement(s) given above is/are correct?

             

1. I only 2. II only
3. II and III 4. I, II, and III
Subtopic:  Cyclic Process |
 51%
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In the \((P\text-V)\) diagram shown, the gas does \(5~\text J\) of work in the isothermal process \(ab\) and \(4~\text J\) in the adiabatic process \(bc.\) What will be the change in internal energy of the gas in the straight path from \(c\) to \(a?\) 

             
1. \(9~\text J\)
2. \(1~\text J\)
3. \(4~\text J\)
4. \(5~\text J\)

Subtopic:  Cyclic Process |
 57%
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