Two short bar magnets of magnetic moments 'M' each are arranged at the opposite corners of a square of side 'd' such that their centres coincide with the corners and their axes are parallel. If the like poles are in the same direction, the magnetic induction at any of the other corners of the square is:

Two short bar magnets of magnetic moments $M$ and $2M$ are placed with their axes perpendicular to each other in a uniform magnetic field. The ratio of the torques experienced by them is:

The field due to a magnet at a distance $R$ from the centre of the magnet is proportional to

If a magnet of pole strength $m$ is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will be

Two bar magnets with magnetic moments M and 2M are placed parallel to each other with like poles together. What is the resultant magnetic moment?

Three identical bar magnets each of magnetic moment $M$ are arranged in the form of an equilateral triangle such that at two vertices like poles are in contact. The resultant magnetic moment will be

A bar magnet of moment '$M$' is bent into a shape '5'. If the length of each part is same, its new magnetic moment will be

A steel wire of length $l$ has a magnetic moment $M.$ It is bent at its middle point at an angle of 60$^ \circ$. Then the magnetic moment of new shape of wire will be

Two short magnets $AB$ and $CD$ are in the $X - Y$ plane and are parallel to $X$-axis and co-ordinates of their centers respectively are (0, 2) and (2, 0). Line joining the north-south poles of $CD$ is opposite to that of $AB$ and lies along the positive $X$-axis. The resultant field induction due to $AB$ and $CD$ at a point $P$ (2, 2) is $100 imes {10^{ - 7}}{\rm{\;T}}$. When the poles of the magnet $CD$ are reversed, the resultant field induction is $50 imes {10^{ - 7}}{\rm{\;T}}.$ The value of magnetic moments of $AB$ and $CD$ (in ${\rm{A}}{{\rm{m}}^2}$) are

A current carrying loop has a magnetic moment 'M'. If the current is doubled and the area of the loop is halved, what will be the new magnetic moment?

Three identical bar magnets each of magnetic moment $M$ are arranged in the form of an equilateral triangle such that at two vertices like poles are in contact. The resultant magnetic moment will be