Maths-
General
Easy
Question
The locus of 
which lies in shaded region (excluding the boundaries) is best represented by
and 
and 
and
and
and
and
and
and
The correct answer is: and
Related Questions to study
Physics-
A bar magnet of length 3 cm has points A and B along its axis at distances of 24 cm and 48 cm on the opposite sides. Ratio of magnetic fields at these points will be
A bar magnet of length 3 cm has points A and B along its axis at distances of 24 cm and 48 cm on the opposite sides. Ratio of magnetic fields at these points will be
Physics-General
Physics-
Two equal bar magnets are kept as shown in the figure. The direction of resultant magnetic field, indicated by arrow head at the point P is (approximately)
Two equal bar magnets are kept as shown in the figure. The direction of resultant magnetic field, indicated by arrow head at the point P is (approximately)
Physics-General
Physics-
The figure below shows the north and south poles of a permanent magnet in which n turn coil of area of cross-section A is resting, such that for a current i passed through the coil, the plane of the coil makes an angle 
with respect to the direction of magnetic field B. If the plane of the magnetic field and the coil are horizontal and vertical respectively, the torque on the coil will be
The figure below shows the north and south poles of a permanent magnet in which n turn coil of area of cross-section A is resting, such that for a current i passed through the coil, the plane of the coil makes an angle with respect to the direction of magnetic field B. If the plane of the magnetic field and the coil are horizontal and vertical respectively, the torque on the coil will be
Physics-General
Physics-
A uniform magnetic field, parallel to the plane of the paper existed in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by
A uniform magnetic field, parallel to the plane of the paper existed in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by
Physics-General
Physics-
The square loop ABCD, carrying a current i, is placed in uniform magnetic field B, as shown. The loop can rotate about the axis XX'. The plane of the loop makes and angle ( < 90°) with the direction of B. Through what angle will the loop rotate by itself before the torque on it becomes zero
The square loop ABCD, carrying a current i, is placed in uniform magnetic field B, as shown. The loop can rotate about the axis XX'. The plane of the loop makes and angle ( < 90°) with the direction of B. Through what angle will the loop rotate by itself before the torque on it becomes zero
Physics-General
Physics-
Following figure shows the path of an electron that passes through two regions containing uniform magnetic fields of magnitudes B1 and B2. It's path in each region is a half circle, choose the correct option
Following figure shows the path of an electron that passes through two regions containing uniform magnetic fields of magnitudes B1 and B2. It's path in each region is a half circle, choose the correct option
Physics-General
Physics-
A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength B occurs only at the lower edge. It carries a current I. Find the change in the reading of the spring balance if the direction of current is reversed
A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength B occurs only at the lower edge. It carries a current I. Find the change in the reading of the spring balance if the direction of current is reversed
Physics-General
Physics-
Find magnetic field at O
Find magnetic field at O
Physics-General
Physics-
Two circular coils X and Y, having equal number of turns, carry equal currents in the same sense and subtend same solid angle at point O. If the smaller coil, X is midway between O and Y, then if we represent the magnetic induction due to bigger coil Y at O as BY and that due to smaller coil X at O as BX , then
Two circular coils X and Y, having equal number of turns, carry equal currents in the same sense and subtend same solid angle at point O. If the smaller coil, X is midway between O and Y, then if we represent the magnetic induction due to bigger coil Y at O as BY and that due to smaller coil X at O as BX , then
Physics-General
Physics-
A particle having a charge of 
and mass 
moves in a circle of radius 10
under the influence of a magnetic field of induction 
. When the particle is at a point 
, a uniform electric field is switched on so that the particle starts moving along the tangent with a uniform velocity. The electric field is
A particle having a charge of and mass moves in a circle of radius 10 under the influence of a magnetic field of induction . When the particle is at a point , a uniform electric field is switched on so that the particle starts moving along the tangent with a uniform velocity. The electric field is
Physics-General
Physics-
A current carrying wire LN is bent in the from shown below. If wire carries a current of 10 A and it is placed in a magnetic field of 5T which acts perpendicular to the paper outwards then it will experience a force
A current carrying wire LN is bent in the from shown below. If wire carries a current of 10 A and it is placed in a magnetic field of 5T which acts perpendicular to the paper outwards then it will experience a force
Physics-General
Physics-
Figure shows a straight wire of length l current i. The magnitude of magnetic field produced by the current at point P is
Figure shows a straight wire of length l current i. The magnitude of magnetic field produced by the current at point P is
Physics-General
Physics-
A wire carrying a current i is placed in a uniform magnetic field in the form of the curve 
The force acting on the wire is
A wire carrying a current i is placed in a uniform magnetic field in the form of the curve The force acting on the wire is
Physics-General
Physics-
Two very thin metallic wires placed along X and Y-axis carry equal currents as shown here. AB and CD are lines at 
with the axes with origin of axes at O. The magnetic field will be zero on the line
Two very thin metallic wires placed along X and Y-axis carry equal currents as shown here. AB and CD are lines at with the axes with origin of axes at O. The magnetic field will be zero on the line
Physics-General
Physics-
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field 
which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then
An electron moving with a speed u along the positive x-axis at y = 0 enters a region of uniform magnetic field which exists to the right of y-axis. The electron exits from the region after some time with the speed v at co-ordinate y, then
Physics-General
