Embibe Experts Solutions for Chapter: Magnetism and Matter, Exercise 1: assam board-2018

Define the elements of the earth's magnetic field.

Define magnetisation and magnetic intensity. Deduce the relation among relative magnetic permeability, permeability of vacuum and magnetic susceptibility. What is the values of susceptibility of a superconductor?

What did Meissner actually observe which is known as Meissner effect?

A magnetic dipole is oscillating in a magnetic field obeying the following expression

$\frac{{\mathrm{d}}^2\mathrm{\theta }}{{\mathrm{dt}}^2}=-\frac{\mathrm{mB}}{\mathrm{I}}\mathrm{\theta }$:

What is the time period of oscillation and mention the nature of oscillation?

Of two metals A and B, it is found that ${\chi }_A>>1$ and  $-1\le {\chi }_B<0$. Name the types of materials to which the metals A and B do belong. Give one example of each.

Define magnetic declination. How does it depend on latitudes?