Embibe Experts Solutions for Chapter: Magnetism, Exercise 1: MHT-CET 2018

The magnetic dipole moment of a short magnetic dipole at a distant point along the equator of magnet has a magnitude of $X$ in SI units. If the distance between point and the magnet is halved then the magnitude of dipole moment will be

Two short bar magnets $A$ and $B$ (having magnetic moments $M_1$ and $M_2$ respectively) are kept one above the other with their magnetic axis perpendicular to each other. If their resultant at a point on the axis of magnet $A$ is inclined at $45°$ with the axis of magnet $A$ then the ratio of magnetic moments $\frac{M_2}{M_1}$ is $\left[\tan 45°=1\right]$

Inside a bar magnet, the magnetic lines of force

A bar magnet of magnetic moment $5 \mathrm{A} {\mathrm{m}}^2$ is placed in a uniform magnetic induction $3\times {10}^{-5} \mathrm{T}.$ If each pole of a magnet experiences a force of $2.5\times {10}^{-4} \mathrm{N}$ then the magnetic length of the magnet is

Magnetization of the sample is

The magnetization of bar magnet of length $5 \mathrm{cm}$, cross-sectional area $2 {\mathrm{cm}}^2$ and net magnetic moment $1 \mathrm{A} {\mathrm{m}}^2$ is

Magnetic susceptibility of a paramagnetic substance is

Above the curie temperature the susceptibility of a ferromagnetic substance varies