Embibe Experts Solutions for Chapter: Magnetism and Matter, Exercise 1: Rajasthan Board-2018

Write definition of Curie temperature for ferromagnetic substances.

Obtain an expression for magnetic moment of an orbital electron.

Define angle of dip. Write value of angle of dip at magnetic poles of earth.

Define Curie temperature.

The pole strength of poles of a bar magnet of effective length $0.1\mathrm{m}$ is $40 \mathrm{A}-\mathrm{m}$. Calculate it's magnetic moment.

What is diamagnetic substances?

The magnetic moment of two bar magnets are $\overrightarrow{{\mathrm{M}}_1}$ and $\overrightarrow{{\mathrm{M}}_2}$. If angle between them is $\mathrm{\theta }$, then write the value of resultant magnetic moment.

Soft iron is used in making electro-magnets. why?