Embibe Experts Solutions for Chapter: Matter and Magnetism, Exercise 1: SRMJEEE (UG) 2014

A magnet of pole strength $m$ and length $l$ is broken into two pieces. The pole strength of each piece is

In a tangent galvanometer, a current of $0.2 \mathrm{A}$ produces a deflection of $30°$. The current required to produce a deflection of $60°$ is

At certain place, horizontal component is $\frac{1}{\sqrt{3}}$ times the vertical component. The angle of dip is

The $B-H$ curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with $1000 \mathrm{turns} {\mathrm{cm}}^{-1}$. The current that should be passed in the solenoid to demagnetize the ferromagnet completely is, 

In a superconductor, critical magnetic field

In a ferroelectric material, as the applied field is gradually reduced to zero, the polarization still left is known as