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Easy
Question
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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Let A, B, C, D be the points on the vertical line such that AB = BC = CD. If a body is released from rest from position A, the time of fall to travel AB, BC and CD during free fall are in the ratio
Let A, B, C, D be the points on the vertical line such that AB = BC = CD. If a body is released from rest from position A, the time of fall to travel AB, BC and CD during free fall are in the ratio
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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
physics-General
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
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 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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physics-
A parallel plate capacitor is charged from a cell and then isolated from it. The separation between the plate is now increased
A parallel plate capacitor is charged from a cell and then isolated from it. The separation between the plate is now increased
physics-General
physics-
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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