Thermodynamic Processes
PHXI12:THERMODYNAMICS

371621 In the given figure, an adiabatic cylindrical tube of \(2 V_{o}\) is divided in two equal parts by a frictionless adiabatic separator. An ideal gas in left side of a tube having pressure \(P_{1}\) and temperature \(T_{1}\) where as in the right side having pressure \(P_{2}\) and temperature \(T_{2} . C_{p} / C_{v}=\gamma\) is the same for both the gases. The separator is slide slowly and is released at a position where it can stay in equilibrium. find the final volume of left part.
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1 \(\dfrac{V_{o} P_{1}}{P_{2}}\)
2 \(\dfrac{V_{o} P_{1}}{P_{1}+P_{2}}\)
3 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{1}^{1 / \gamma}+P_{2}^{1 / \gamma}}\)
4 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{2}^{1 / \gamma}}\)
PHXI12:THERMODYNAMICS

371622 An adiabatic cylindrical tube is fitted with an adiabatic separator as shown in figure. Initially separator is in equilibrium and divides a tube in two equal parts. The separator can be slide into the tube by an external mechanism. An ideal gas \((\gamma=1.5)\) is injected in the two sides at equal pressures and temperatures. Now separator is slide to a position where it divides the tube in the ratio \(7: 3\). Find the ratio of the temperatures in the two parts of the vessel.
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1 \(\sqrt{3}: \sqrt{2}\)
2 \(\sqrt{1}: \sqrt{2}\)
3 \(\sqrt{3}: \sqrt{7}\)
4 \(\sqrt{7}: \sqrt{3}\)
PHXI12:THERMODYNAMICS

371623 Two cylinders fitted with pistons and placed as shown, connected with string through a small tube of negligible volume, are filled with a gas at pressure \(p_{o}\) and temperature \(T_{o}\). The radius of smaller cylinder is half of the other. If the temperature is increased to \(2 T_{o}\), find the pressure, if the piston of bigger cylinder moves towards left by 1 metre?
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1 \(\dfrac{4}{5} P_{o}\)
2 \(\dfrac{3}{5} P\)
3 \(\dfrac{2}{5} P_{o}\)
4 \(\dfrac{5}{4} P_{o}\)
PHXI12:THERMODYNAMICS

371624 Two rigid boxes containing different ideal gases are placed on table. Box \(A\) contains one mole of nitrogen at temperature \(T_{0}\), while box \(B\) contains one mole of helium at temperature \((7 / 3) T_{0}\). The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes). Then, the final temperature of the gases \(T_{f}\) in terms of \(T_{0}\) is

1 \(T_{f}=\dfrac{3}{7} T_{0}\)
2 \(T_{f}=\dfrac{7}{3} T_{0}\)
3 \(T_{f}=\dfrac{3}{2} T_{0}\)
4 \(T_{f}=\dfrac{5}{2} T_{0}\)
PHXI12:THERMODYNAMICS

371621 In the given figure, an adiabatic cylindrical tube of \(2 V_{o}\) is divided in two equal parts by a frictionless adiabatic separator. An ideal gas in left side of a tube having pressure \(P_{1}\) and temperature \(T_{1}\) where as in the right side having pressure \(P_{2}\) and temperature \(T_{2} . C_{p} / C_{v}=\gamma\) is the same for both the gases. The separator is slide slowly and is released at a position where it can stay in equilibrium. find the final volume of left part.
supporting img

1 \(\dfrac{V_{o} P_{1}}{P_{2}}\)
2 \(\dfrac{V_{o} P_{1}}{P_{1}+P_{2}}\)
3 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{1}^{1 / \gamma}+P_{2}^{1 / \gamma}}\)
4 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{2}^{1 / \gamma}}\)
PHXI12:THERMODYNAMICS

371622 An adiabatic cylindrical tube is fitted with an adiabatic separator as shown in figure. Initially separator is in equilibrium and divides a tube in two equal parts. The separator can be slide into the tube by an external mechanism. An ideal gas \((\gamma=1.5)\) is injected in the two sides at equal pressures and temperatures. Now separator is slide to a position where it divides the tube in the ratio \(7: 3\). Find the ratio of the temperatures in the two parts of the vessel.
supporting img

1 \(\sqrt{3}: \sqrt{2}\)
2 \(\sqrt{1}: \sqrt{2}\)
3 \(\sqrt{3}: \sqrt{7}\)
4 \(\sqrt{7}: \sqrt{3}\)
PHXI12:THERMODYNAMICS

371623 Two cylinders fitted with pistons and placed as shown, connected with string through a small tube of negligible volume, are filled with a gas at pressure \(p_{o}\) and temperature \(T_{o}\). The radius of smaller cylinder is half of the other. If the temperature is increased to \(2 T_{o}\), find the pressure, if the piston of bigger cylinder moves towards left by 1 metre?
supporting img

1 \(\dfrac{4}{5} P_{o}\)
2 \(\dfrac{3}{5} P\)
3 \(\dfrac{2}{5} P_{o}\)
4 \(\dfrac{5}{4} P_{o}\)
PHXI12:THERMODYNAMICS

371624 Two rigid boxes containing different ideal gases are placed on table. Box \(A\) contains one mole of nitrogen at temperature \(T_{0}\), while box \(B\) contains one mole of helium at temperature \((7 / 3) T_{0}\). The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes). Then, the final temperature of the gases \(T_{f}\) in terms of \(T_{0}\) is

1 \(T_{f}=\dfrac{3}{7} T_{0}\)
2 \(T_{f}=\dfrac{7}{3} T_{0}\)
3 \(T_{f}=\dfrac{3}{2} T_{0}\)
4 \(T_{f}=\dfrac{5}{2} T_{0}\)
PHXI12:THERMODYNAMICS

371621 In the given figure, an adiabatic cylindrical tube of \(2 V_{o}\) is divided in two equal parts by a frictionless adiabatic separator. An ideal gas in left side of a tube having pressure \(P_{1}\) and temperature \(T_{1}\) where as in the right side having pressure \(P_{2}\) and temperature \(T_{2} . C_{p} / C_{v}=\gamma\) is the same for both the gases. The separator is slide slowly and is released at a position where it can stay in equilibrium. find the final volume of left part.
supporting img

1 \(\dfrac{V_{o} P_{1}}{P_{2}}\)
2 \(\dfrac{V_{o} P_{1}}{P_{1}+P_{2}}\)
3 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{1}^{1 / \gamma}+P_{2}^{1 / \gamma}}\)
4 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{2}^{1 / \gamma}}\)
PHXI12:THERMODYNAMICS

371622 An adiabatic cylindrical tube is fitted with an adiabatic separator as shown in figure. Initially separator is in equilibrium and divides a tube in two equal parts. The separator can be slide into the tube by an external mechanism. An ideal gas \((\gamma=1.5)\) is injected in the two sides at equal pressures and temperatures. Now separator is slide to a position where it divides the tube in the ratio \(7: 3\). Find the ratio of the temperatures in the two parts of the vessel.
supporting img

1 \(\sqrt{3}: \sqrt{2}\)
2 \(\sqrt{1}: \sqrt{2}\)
3 \(\sqrt{3}: \sqrt{7}\)
4 \(\sqrt{7}: \sqrt{3}\)
PHXI12:THERMODYNAMICS

371623 Two cylinders fitted with pistons and placed as shown, connected with string through a small tube of negligible volume, are filled with a gas at pressure \(p_{o}\) and temperature \(T_{o}\). The radius of smaller cylinder is half of the other. If the temperature is increased to \(2 T_{o}\), find the pressure, if the piston of bigger cylinder moves towards left by 1 metre?
supporting img

1 \(\dfrac{4}{5} P_{o}\)
2 \(\dfrac{3}{5} P\)
3 \(\dfrac{2}{5} P_{o}\)
4 \(\dfrac{5}{4} P_{o}\)
PHXI12:THERMODYNAMICS

371624 Two rigid boxes containing different ideal gases are placed on table. Box \(A\) contains one mole of nitrogen at temperature \(T_{0}\), while box \(B\) contains one mole of helium at temperature \((7 / 3) T_{0}\). The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes). Then, the final temperature of the gases \(T_{f}\) in terms of \(T_{0}\) is

1 \(T_{f}=\dfrac{3}{7} T_{0}\)
2 \(T_{f}=\dfrac{7}{3} T_{0}\)
3 \(T_{f}=\dfrac{3}{2} T_{0}\)
4 \(T_{f}=\dfrac{5}{2} T_{0}\)
PHXI12:THERMODYNAMICS

371621 In the given figure, an adiabatic cylindrical tube of \(2 V_{o}\) is divided in two equal parts by a frictionless adiabatic separator. An ideal gas in left side of a tube having pressure \(P_{1}\) and temperature \(T_{1}\) where as in the right side having pressure \(P_{2}\) and temperature \(T_{2} . C_{p} / C_{v}=\gamma\) is the same for both the gases. The separator is slide slowly and is released at a position where it can stay in equilibrium. find the final volume of left part.
supporting img

1 \(\dfrac{V_{o} P_{1}}{P_{2}}\)
2 \(\dfrac{V_{o} P_{1}}{P_{1}+P_{2}}\)
3 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{1}^{1 / \gamma}+P_{2}^{1 / \gamma}}\)
4 \(\dfrac{2 V_{o} P_{1}^{1 / \gamma}}{P_{2}^{1 / \gamma}}\)
PHXI12:THERMODYNAMICS

371622 An adiabatic cylindrical tube is fitted with an adiabatic separator as shown in figure. Initially separator is in equilibrium and divides a tube in two equal parts. The separator can be slide into the tube by an external mechanism. An ideal gas \((\gamma=1.5)\) is injected in the two sides at equal pressures and temperatures. Now separator is slide to a position where it divides the tube in the ratio \(7: 3\). Find the ratio of the temperatures in the two parts of the vessel.
supporting img

1 \(\sqrt{3}: \sqrt{2}\)
2 \(\sqrt{1}: \sqrt{2}\)
3 \(\sqrt{3}: \sqrt{7}\)
4 \(\sqrt{7}: \sqrt{3}\)
PHXI12:THERMODYNAMICS

371623 Two cylinders fitted with pistons and placed as shown, connected with string through a small tube of negligible volume, are filled with a gas at pressure \(p_{o}\) and temperature \(T_{o}\). The radius of smaller cylinder is half of the other. If the temperature is increased to \(2 T_{o}\), find the pressure, if the piston of bigger cylinder moves towards left by 1 metre?
supporting img

1 \(\dfrac{4}{5} P_{o}\)
2 \(\dfrac{3}{5} P\)
3 \(\dfrac{2}{5} P_{o}\)
4 \(\dfrac{5}{4} P_{o}\)
PHXI12:THERMODYNAMICS

371624 Two rigid boxes containing different ideal gases are placed on table. Box \(A\) contains one mole of nitrogen at temperature \(T_{0}\), while box \(B\) contains one mole of helium at temperature \((7 / 3) T_{0}\). The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes). Then, the final temperature of the gases \(T_{f}\) in terms of \(T_{0}\) is

1 \(T_{f}=\dfrac{3}{7} T_{0}\)
2 \(T_{f}=\dfrac{7}{3} T_{0}\)
3 \(T_{f}=\dfrac{3}{2} T_{0}\)
4 \(T_{f}=\dfrac{5}{2} T_{0}\)