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From the circular disc of radius 4R two small disc of radius R are cut off. The centre of mass of the new structure will be:
- None of these
The correct answer is:
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Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
physics-General
physics-
Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
physics-General
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A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R
/2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R /2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
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A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
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physics-
A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
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physics-
A capacitor of capacitance 0.1 
F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
A capacitor of capacitance 0.1 F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
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physics-
In the circuit shown in the figure, switches S1 and S2 have been closed for a long time
In the circuit shown in the figure, switches S1 and S2 have been closed for a long time
physics-General
physics-
In the circuit shown, the switch is shifted from position 1 
2 at t = 0. The switch was initially in position 1 since a long time. The graph between charge on capacitor C and time 't' is
In the circuit shown, the switch is shifted from position 1 2 at t = 0. The switch was initially in position 1 since a long time. The graph between charge on capacitor C and time 't' is
physics-General
physics-
In the circuit shown, the charge on the 3 F capacitor at steady state will be
In the circuit shown, the charge on the 3 F capacitor at steady state will be
physics-General
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The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which capacitor has the largest potential difference between its plates?
The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which capacitor has the largest potential difference between its plates?
physics-General
physics-
The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which list below places the capacitors in order of increasing capacitance?
The figure below shows four parallel plate capacitors : A, B, C and D. Each capacitor carries the same charge q and has the same plate area A. As suggested by the figure, the plates of capacitors A and C are separated by a distance d while those of B and D are separated by a distance 2d. Capacitors A and B are maintained in vacuum while capacitors C and D contain dielectrics with constant k = 5.
Which list below places the capacitors in order of increasing capacitance?
physics-General
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Two identical capacitors 1 and 2 are connected in series. The capacitor 2 contains a dielectric slab of constant K as shown. They are connected to a battery of emf V0 volts. The dielectric slab is then removed. Let Q1 and Q2 be the charge stored in the capacitors before removing the slab and Q1 and Q2 be the values after removing the slab. Then
Two identical capacitors 1 and 2 are connected in series. The capacitor 2 contains a dielectric slab of constant K as shown. They are connected to a battery of emf V0 volts. The dielectric slab is then removed. Let Q1 and Q2 be the charge stored in the capacitors before removing the slab and Q1 and Q2 be the values after removing the slab. Then
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Three long conducting plate A, B & C having charges +q, –2q & +q as shown in figure. Here plate A and C are fixed. If the switch S is closed. The middle plate (B) will start moving in
Three long conducting plate A, B & C having charges +q, –2q & +q as shown in figure. Here plate A and C are fixed. If the switch S is closed. The middle plate (B) will start moving in
physics-General
physics-
Five identical parallel conducting plates each of area A have separation ‘d’ between successive surfaces. The plates are connected to the terminal of a battery as shown in the fig. The effective capacitance of the circuit is
Five identical parallel conducting plates each of area A have separation ‘d’ between successive surfaces. The plates are connected to the terminal of a battery as shown in the fig. The effective capacitance of the circuit is
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The amount of heat liberated in the circuit after closing the switch S.
The amount of heat liberated in the circuit after closing the switch S.
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