Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A short bar magnet with the north pole facing north forms a neutral point at P in the horizontal plane. If the magnet is rotated by 90 o in the horizontal plane, the net magnetic induction at P is ( Horizontal component of earth’s magnetic field = B H ):
18
Oct
A short bar magnet with the north pole facing north forms a neutral point at P in the horizontal plane. If the magnet is rotated by 90 o in the horizontal plane, the net magnetic induction at P is ( Horizontal component of earth’s magnetic field = B H ): A short bar magnet with [...]
Two identical bar magnets each having magnetic moment of M, are kept at a distance of 2d with their axes perpendicular to each other in a horizontal plane. The magnetic induction midway between them is :
18
Oct
Two identical bar magnets each having magnetic moment of M, are kept at a distance of 2d with their axes perpendicular to each other in a horizontal plane. The magnetic induction midway between them is : are kept at a distance of 2d with their axes perpendicular to each other in a horizontal plane. The [...]
Two identical magnetic dipoles of magnetic moments 1.0 Am^ 2 each, placed at a separation of 2 m with their axis perpendicular to each other. The resultant field at point midway between the dipole is
18
Oct
Two identical magnetic dipoles of magnetic moments 1.0 Am^ 2 each, placed at a separation of 2 m with their axis perpendicular to each other. The resultant field at point midway between the dipole is placed at a separation of 2 m with their axis perpendicular to each other. The resultant field at point midway [...]
A small rod of bismuth is suspended freely between the poles of a strong electromagnet. It is found to arrange itself at right angles to the magnetic field . This observation established that bismuth is
18
Oct
A small rod of bismuth is suspended freely between the poles of a strong electromagnet. It is found to arrange itself at right angles to the magnetic field . This observation established that bismuth is The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 36 %. By doing [...]
A current carryingcoil is placed with its axis perpendicular to N-S direction. Let horizontal component of earth’s magnetic field be H0 and magnetic field inside the loop is H. If a magnet is suspended inside the loop, it makes angle θ with H. Then θ=
18
Oct
A current carryingcoil is placed with its axis perpendicular to N-S direction. Let horizontal component of earth’s magnetic field be H0 and magnetic field inside the loop is H. If a magnet is suspended inside the loop, it makes angle θ with H. Then θ= The magnet of a vibration magnetometer is heated so as [...]
A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be havled by rotating it , then the angle by which itis to be rotated is
18
Oct
A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be havled by rotating it , then the angle by which itis to be rotated is A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is [...]
Two similar bar magnets P and Q , each of magnetic moment M are taken . If P is cut along its axial line and Q is cut along its equatorial line, all the four pieces obtained have
18
Oct
Two similar bar magnets P and Q , each of magnetic moment M are taken . If P is cut along its axial line and Q is cut along its equatorial line, all the four pieces obtained have all the four pieces obtained have each of magnetic moment M are taken . If P is [...]
A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60 degree. THe torque required to maintain the needle in its position will be
18
Oct
A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60 degree. THe torque required to maintain the needle in its position will be A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60 degree. THe torque required [...]
The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 36 %. By doing this the period time of the magnetometer will
18
Oct
The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 36 %. By doing this the period time of the magnetometer will The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 36 %. By doing this the period time of the magnetometer [...]
A bar magnet has coercivity 4 × 10^3 A/m. It is desired to demagnetise it by inserting it inside a solenoid 12cm long and having 60 turns. The current that should be sent through the solenoid is
18
Oct
A bar magnet has coercivity 4 × 10^3 A/m. It is desired to demagnetise it by inserting it inside a solenoid 12cm long and having 60 turns. The current that should be sent through the solenoid is A bar magnet has coercivity 4 × 10^3 A/m. It is desired to demagnetise it by inserting it [...]