If in the thermodynamic process shown in the figure, the work done by the system along A B C is 50 J and the change in internal energy during C A is 30 J, then the heat supplied during A B C is:
1. | 50 J | 2. | 20 J |
3. | 10 J | 4. | 80 J |
An ideal gas is taken through the cycle as shown in figure below. If the net heat supplied to the gas is 10 J, then the work done by the gas in the process is
1. | -10 J | 2. | -30 J |
3. | -15 J | 4. | -20 J |
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 |
In the cyclic process shown in the pressure-volume \((P-V)\) diagram, the change in internal energy is equal to:
1.
2.
3.
4. zero
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. |
The cyclic process of 2 moles of diatomic gas is shown in the figure. Which of the following statements is correct?
1. | Process BC is an isothermal compression. |
2. | Work done in the process CA is \(4 R T_0\) |
3. | Work done in the process AB is zero. |
4. | All of these |
In a cyclic process, the internal energy of the gas:
1. | Increases | 2. | Decreases |
3. | Remains constant | 4. | Becomes zero |
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. | \(0, R T_2 \ln \left(\frac{V_2}{V_1}\right), R\left(T_2-T_1\right)\) |
The Carnot cycle (reversible) of gas is represented by a pressure-volume curve as shown. Consider the following statements:
I. | Area \(ABCD\) = Work done on the gas |
II. | Area \(ABCD\) = Net heat absorbed |
III. | Change in the internal energy in 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 |
In the P-V diagram shown, the gas does 5 J of work in the isothermal process ab and 4 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. 9J
2. 1 J
3. 4 J
4. 5 J