Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 unique nature of atom.
 most of the volume of an atom is empty space.
 none of these.
 the atoms can neither be created nor be destroyed.

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Electromagnetic Field Theory
The statement which is not correct from the following:

 Gauss’s static that divergence of D = ρu.
 Gauss’s law states that total electric flux through any surface is equal to the total charge enclosed by surface.
 For a uniform long charged line with l1 c/m the electric field intensity E is given as E = ρL/(π ε0.r).
 An electric flux line is an imaginary path or a line drawn in such a way, that its direction at any point is the direction of electric field at that point.

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Electromagnetic Field Theory
Magnetostriction is a phenomenon of

 generation of magnetism in electrical conductors.
 generation of electricity in ferromagnetic materials.
 change in physical dimensions of ferromagnetic materials during magnetism.
 change in permeability of ferromagnetic materials during magnetism.

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