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General
Easy
Question
The magnetic flux density in vaccum at the centre of any square coil (of one turn) of side 'a' and carrying a current I is kI/a where k is independent. The magnitude of the induction at X, Y, Z are 
, 
and 
respectively. Then
The correct answer is:
Related Questions to study
physics-
Two blocks (from very far apart) are approaching towards each other with velocities as shown in figure. The coefficient of friction for both the blocks is 
= 0.2
How much distance will centre of mass travel before coming permanently to rest
Two blocks (from very far apart) are approaching towards each other with velocities as shown in figure. The coefficient of friction for both the blocks is = 0.2
How much distance will centre of mass travel before coming permanently to rest
physics-General
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Two blocks (from very far apart) are approaching towards each other with velocities as shown in figure. The coefficient of friction for both the blocks is m = 0.2
Linear momentum of the system is
Two blocks (from very far apart) are approaching towards each other with velocities as shown in figure. The coefficient of friction for both the blocks is m = 0.2
Linear momentum of the system is
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A particle of mass m = 0.1 kg is released from rest from a point A of wedge of mass M = 2.4 kg free to slide on a frictionless horizontal plane. The particle slides down the smooth face AB of the wedge. When the velocity of the wedge is 0.2 m/s the velocity of the particle in m/s relative to the wedge is:
A particle of mass m = 0.1 kg is released from rest from a point A of wedge of mass M = 2.4 kg free to slide on a frictionless horizontal plane. The particle slides down the smooth face AB of the wedge. When the velocity of the wedge is 0.2 m/s the velocity of the particle in m/s relative to the wedge is:
physics-General
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Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic
Coefficient of restitution during the collision is changed to 1/2, keeping all other parameters unchanged. What is the velocity of the ball B after the collision?
Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic
Coefficient of restitution during the collision is changed to 1/2, keeping all other parameters unchanged. What is the velocity of the ball B after the collision?
physics-General
physics-
Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic.
Impulse of the force exerted by A on B during the collision, is equal to
Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic.
Impulse of the force exerted by A on B during the collision, is equal to
physics-General
physics-
Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic.
Velocity of the ball A just after the collision is
Two smooth balls A and B, each of mass m and radius R, have their centres at (0,0,R) and at (5R,–R,R) respectively, in a coordinate system as shown. Ball A, moving along positive x axis, collides with ball B. Just before the collision, speed of ball A is 4 m/s and ball B is stationary. The collision between the balls is elastic.
Velocity of the ball A just after the collision is
physics-General
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Two cars A and B start racing at the same time on a flat race p track which consists of two straight sections each of length 100 and one circular section as in Fig. The rule of the race is that each car must travel at constant speed at all times without ever skidding
Two cars A and B start racing at the same time on a flat race p track which consists of two straight sections each of length 100 and one circular section as in Fig. The rule of the race is that each car must travel at constant speed at all times without ever skidding
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On a particle moving on a circular path with a constant speed v, light is thrown from a projectors placed at the centre of the circular path. The shadow of the particle is formed on the wall. the velocity of shadow up the wall is
On a particle moving on a circular path with a constant speed v, light is thrown from a projectors placed at the centre of the circular path. The shadow of the particle is formed on the wall. the velocity of shadow up the wall is
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A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
A layered lens as shown in the figure is made of two materials indicated by different shades. A point object is placed on its axis. The lens will form.
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When the prism is in the minimum deviation position (Figure). Choose the correct one.
When the prism is in the minimum deviation position (Figure). Choose the correct one.
physics-General
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The inclined plane OA rotates in vertical plane about a horizontal axis through = 3 rad/sec. As it passes the 
O with a constant counter clockwise velocity 
= 0, a small mass m = 1 kg is placed upon it at a radial distance r =position 0.5 m. If the mass is observed to be at rest with respect to inclined plane. = 37° between the mass The value of static friction force at & the incline plane.
The inclined plane OA rotates in vertical plane about a horizontal axis through = 3 rad/sec. As it passes the O with a constant counter clockwise velocity = 0, a small mass m = 1 kg is placed upon it at a radial distance r =position 0.5 m. If the mass is observed to be at rest with respect to inclined plane. = 37° between the mass The value of static friction force at & the incline plane.
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A skier plans to ski a smooth fixed hemisphere of radius R. He starts from at which heqrest from a curved smooth surface of height (R/4). The angle leaves the hemisphere is
A skier plans to ski a smooth fixed hemisphere of radius R. He starts from at which heqrest from a curved smooth surface of height (R/4). The angle leaves the hemisphere is
physics-General
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A smooth semicircular tube AB of radius r is fixed in a vertical plane r asp r and weight W= pand contains a heavy flexible chain of length shown. Assuming a slight disturbance to start the chain in motion, the velocity v with which it will emerge from the open end B of the tube is
A smooth semicircular tube AB of radius r is fixed in a vertical plane r asp r and weight W= pand contains a heavy flexible chain of length shown. Assuming a slight disturbance to start the chain in motion, the velocity v with which it will emerge from the open end B of the tube is
physics-General
physics-
Block A in the figure is released from rest when the extension in the spring is 
The maximum downwards displacement of the block is
Block A in the figure is released from rest when the extension in the spring is The maximum downwards displacement of the block is
physics-General
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A bead of mass 5kg is free to slide on the horizontal rod AB. They are connected to two identical springs of natural length h ms as shown. If initially bead was at O & M is vertically below L then, velocity of bead at point N will be
A bead of mass 5kg is free to slide on the horizontal rod AB. They are connected to two identical springs of natural length h ms as shown. If initially bead was at O & M is vertically below L then, velocity of bead at point N will be
physics-General
