Magnetic lines of force due to a bar magnet do not intersect because
a point always has a single net magnetic field
the lines have similar charges and so repel each other
the lines always diverge from a single force
the lines need magnetic lenses to be made to interest
A magnet of magnetic moment $M$ and pole strength $m$ is divided in two equal parts, then magnetic moment of each part will be
Two short bar magnets oflength $1\ cm$ each have magnetic moments $1.20\ Am^2$ and $1.00\ Am^2$ respectively. They are placed on a horizontal table parallel to each other with their $N$ poles pointing towards the South. They have a common magnetic equator and are separated by a distance of $20.0\ cm$. The value of the resultand horizontal magnetic induction at the mid-point $O$ of the line joining their centres is close to (Horizontal component of earth.s magnetic induction is $3.6 \times 10^{-5}$ $Wbm^{-2}$ )
Write the equation of dipole moment of magnet in the form of electric current.
In which direction does a free hanging magnet get stabilized ? Explain.
Two magnets $A$ and $B $ are identical and these are arranged as shown in the figure. Their length is negligible in comparison to the separation between them. A magnetic needle is placed between the magnets at point $P$ which gets deflected through an angle $\theta $ under the influence of magnets. The ratio of distance ${d_1}$ and ${d_2}$ will be