Advertisements
Advertisements
प्रश्न
Which of the following substances are diamagnetic?
Bi, Al, Na, Cu, Ca and Ni
Advertisements
उत्तर
Diamagnetic are those substances which when placed in a magnetic field are feebly magnetized in a direction opposite to that of the magnetizing field. Among the given elements Bi and Cu are diamagnetic substances.
APPEARS IN
संबंधित प्रश्न
A rod of magnetic material of cross-section 0.25 cm2 is placed in a magnetizing field of intensity 4000 A/m-1. The magnetic flux passing through the rod is 25 × 10-6 Wb. Find out
(a) relative permeability
(b) magnetic susceptibility and
(c) magnetisation of the rod.
The materials having negative magnetic susceptibility are ____________.
A small quantity of paramagnetic liquid is taken in a watch - glass and kept on two dissimilar magnetic poles. The liquid ____________.
Why does a paramagnetic sample display greater magnetisation (for the same magnetising field) when cooled?
Magnetic field lines are always nearly normal to the surface of a ferromagnet at every point. (This fact is analogous to the static electric field lines being normal to the surface of a conductor at every point.) Why?
The relative magnetic permeability of a substance X is slightly less than unity and that of substance Y is slightly more than unity, then ______.
Explain ferromagnetism on the basis of the domain theory.
State the dimensions of magnetization.
