(i) What is meant by a paramagnetic substance? State Curie’s law.
(ii) What is the value of magnetic susceptibility of Aluminium of its relative permeability is 1.000022?
How much force per unit length acts on a long current carrying conductor X due to a current flowing through another similar conductor Y, kept parallel to it in vacuum ?
Use this equation to define an Ampere, the fundamental unit of current.
(i) Arrange all the seven types of electro-magnetic radiations in increasing order of their frequencies. (You must begin with a radiation with lowest frequency and end with the one having the highest frequency.)
(ii) State how electric vector E, magnetic vector B and velocity vector C are oriented in an electromagnetic wave.
(i) Radiations in their increasing order of frequencies is as listed below:
Visible, U-V , X-ray,Radio waves, Microwaves, Infrared and Gamma rays.
ii) In electromagnetic wave propagating along X-direction electric vector E u, magnetic vector Bu, are taken in the Y-7 plane and C u,taken along X-direction.