Related Questions

The ratio of intensity of magnetisation to the magnetisation force is known as
A flux density
B susceptibility
C relative permeability
D none of the above
Spontaneous magnetisation is characteristic of ferromagnetic materials.
A True
B False
The fact that domains exhibits spontaneous magnetisation is
A First hypothesis is of Curie
B Second hypothesis is of Weiss
C Curie-Weiss law
D Boltzmann’s statistics
The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
A Rigid
B Tough
C Ductile
D Plastic
The materials which exhibit the same elastic properties in all directions are called
A Homogeneous
B Inelastic
C Isotropic
D Isentropic
X-rays do not exhibit the property of
A Reflection
B Scattering
C Diffraction
D Dispersion
While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit?
A E.M.F.
B Current
C Current density
D Conductivity
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be
A M
B $$\frac{{\text{M}}}{2}$$
C 2 M
D $$\frac{{\text{M}}}{4}$$
How does the magnetic compass needle behave in a magnetic field?
A It assures a position right angle to magnetic field
B It starts rotating
C It assures a position which follows a line of magnetic flux
D None of the above
If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity
A less than that of disc but in opposite direction
B equal to that of disc and in the same direction
C equal to that of disc and in the opposite direction
D less than that of disc and in the same direction

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