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General
Easy
Question
Three rings, each having equal radius R, are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current I is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
- zero
The correct answer is:
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A charge particle A of charge q = 2 C has velocity v = 100 m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r = 2 m).
A charge particle A of charge q = 2 C has velocity v = 100 m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r = 2 m).
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The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)
The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)
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Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (q < 180°)
Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (q < 180°)
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A current of i ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field at 0 is
A current of i ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field at 0 is
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One mole of an ideal diatomic gas is taken through the cycle as shown in the figure. 
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Three processes form a thermodynamic cycle as shown on P-V diagram for an ideal gas. Process 1 
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Three processes form a thermodynamic cycle as shown on P-V diagram for an ideal gas. Process 1 2 takes place at constant temperature (300K). Process takes place at constant volume. During this process 40J of heat leaves the system. Process is adiabatic and temperature T3 is 275K. Work done by the gas during the process 3 1 is
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Two vessels of the same volume contain the same gas at same temperature. If the pressure in the vessels be in the ratio of 1 : 2, then
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The figure, shows the graph of logarithmic reading of pressure and volume for two ideal gases A and B undergoing adiabatic process. From figure it can be concluded that
The figure, shows the graph of logarithmic reading of pressure and volume for two ideal gases A and B undergoing adiabatic process. From figure it can be concluded that
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An enclosed ideal gas is taken through a cycle as shown in the figure. Then
An enclosed ideal gas is taken through a cycle as shown in the figure. Then
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An ideal gas is taken from point A to point C on P-V diagram through two process AOC and ABC as shown in the figure. Process AOC is isothermal
An ideal gas is taken from point A to point C on P-V diagram through two process AOC and ABC as shown in the figure. Process AOC is isothermal
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An ideal gas undergoes a thermodynamics cycle as shown in figure. Which of the following graphs represents the same cycle?
An ideal gas undergoes a thermodynamics cycle as shown in figure. Which of the following graphs represents the same cycle?
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Pressure versus temperature graph of an ideal gas is shown in figure
Pressure versus temperature graph of an ideal gas is shown in figure
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An ideal gas mixture filled inside a balloon expands according to the relation PV2/3 = constant. The temperature inside the balloon is
An ideal gas mixture filled inside a balloon expands according to the relation PV2/3 = constant. The temperature inside the balloon is
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A cylindrical tube of cross-sectional area A has two air tight frictionless pistons at its two ends. The pistons are tied with a straight two ends. The pistons are tied with a straight piece of metallic wire. The tube contains a gas at atmospheric pressure P0 and temperature T0 . If temperature of the gas is doubled then the tension in the wire is
A cylindrical tube of cross-sectional area A has two air tight frictionless pistons at its two ends. The pistons are tied with a straight two ends. The pistons are tied with a straight piece of metallic wire. The tube contains a gas at atmospheric pressure P0 and temperature T0 . If temperature of the gas is doubled then the tension in the wire is
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In the above thermodynamic process, the correct statement is
In the above thermodynamic process, the correct statement is
physics-General
