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The field line to the right is a field line of the electric field, then its representation can be
The correct answer is:
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A particle of mass 4 kg moves between two points A and B on a smooth horizontal surface under the action of two forces such that when it is at a point P, the forces are 2A N and 2B N. If the particle is released from rest at A, find the time it takes to travel a quarter of the way from A to B.
A particle of mass 4 kg moves between two points A and B on a smooth horizontal surface under the action of two forces such that when it is at a point P, the forces are 2A N and 2B N. If the particle is released from rest at A, find the time it takes to travel a quarter of the way from A to B.
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In the figure shown, two identical discs of radius R each are placed on a smooth horizontal plane. Thread unwraps without slack from discs when they move away from each other. At any instant acceleration of centres of disc A and B are a2 and a1 respectively in opposite direction while their angular acceleration are a2 and a1 respectively. If string unwraps from discs without slipping then
In the figure shown, two identical discs of radius R each are placed on a smooth horizontal plane. Thread unwraps without slack from discs when they move away from each other. At any instant acceleration of centres of disc A and B are a2 and a1 respectively in opposite direction while their angular acceleration are a2 and a1 respectively. If string unwraps from discs without slipping then
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A uniform disc of mass M and radius R is supported vertically by a pivot at its periphery as shown. A particle of mass M is fixed to the rim and raised to the highest point above the centre. The system is then released from rest and it can rotate about its pivot freely. The angular speed of the system when the attached object is directly beneath the pivot is
A uniform disc of mass M and radius R is supported vertically by a pivot at its periphery as shown. A particle of mass M is fixed to the rim and raised to the highest point above the centre. The system is then released from rest and it can rotate about its pivot freely. The angular speed of the system when the attached object is directly beneath the pivot is
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Two trolleys 1 and 2 are moving with accelerations a1 and a2 respectively in the same direction. A block of mass ‘’m’’ on trolley 1 is in equilibrium from the frame of observer stationary w.r.t. trolley 2. The magnitude of friction force on block due to trolley is (assume that no horizontal force other than friction force is acting on block)
Two trolleys 1 and 2 are moving with accelerations a1 and a2 respectively in the same direction. A block of mass ‘’m’’ on trolley 1 is in equilibrium from the frame of observer stationary w.r.t. trolley 2. The magnitude of friction force on block due to trolley is (assume that no horizontal force other than friction force is acting on block)
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A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
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One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
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Tangential acceleration of a particle starting from rest and moving in a circle of radius 1 metre varies with time as in graph. Time after which total acceleration of particle makes an angle of 30° with radial acceleration is :
Tangential acceleration of a particle starting from rest and moving in a circle of radius 1 metre varies with time as in graph. Time after which total acceleration of particle makes an angle of 30° with radial acceleration is :
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An object moves counter-clockwise along the circular path shown below. As it moves along the path its acceleration vector continuously points towards point S. The object
An object moves counter-clockwise along the circular path shown below. As it moves along the path its acceleration vector continuously points towards point S. The object
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A cylinder having radius 0.4 m, initially rotating (at t = 0) with w0 = 54 rad/sec is placed on a rough inclined plane with q = 37° having friction coefficient m = 0.5. The time taken by the cylinder to start pure rolling is :
A cylinder having radius 0.4 m, initially rotating (at t = 0) with w0 = 54 rad/sec is placed on a rough inclined plane with q = 37° having friction coefficient m = 0.5. The time taken by the cylinder to start pure rolling is :
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Two fixed charges – 2Q and Q are located at points with coordinates (–3a, 0) and (+3a, 0) respectively in the x – y plane. The points in the x – y plane where the electric potential due to the system is zero lie on a circle whose centre and radius are
Two fixed charges – 2Q and Q are located at points with coordinates (–3a, 0) and (+3a, 0) respectively in the x – y plane. The points in the x – y plane where the electric potential due to the system is zero lie on a circle whose centre and radius are
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Physics-
The work done by external agent in carrying a particle of a charge 2C from B (1 m, 0, 1 m) to A (0.8 m, 0.6 m 1 m) in a non-uniform electric field along the straight line path from B to A is
The work done by external agent in carrying a particle of a charge 2C from B (1 m, 0, 1 m) to A (0.8 m, 0.6 m 1 m) in a non-uniform electric field along the straight line path from B to A is
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Obtain w if the focal length of the mirror formed by shiny liquid surface is 20 cm
Obtain w if the focal length of the mirror formed by shiny liquid surface is 20 cm
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For the biprism experiment shown in the figure, the fringe width increases when
For the biprism experiment shown in the figure, the fringe width increases when
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When the cart maximally compresses the spring at the bottom of the fixed track, the cart’s
When the cart maximally compresses the spring at the bottom of the fixed track, the cart’s
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Now imagine that the entire set-up is immersed in water (n = 1.33). Which of the following best describes what happens to the pattern of fringes?
Now imagine that the entire set-up is immersed in water (n = 1.33). Which of the following best describes what happens to the pattern of fringes?
Physics-General