Electromagnetic Field Theory
Two spheres of radius r1 and r2 are connected by a conducting wire. Each of the spheres has been given a charge Q. Now

 larger sphere will have smalled potential.
 smaller sphere will have zero potential.
 larger sphere will have greater potential.
 both of sphere will have same potential.

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Electromagnetic Field Theory
The wave in wave guide has

Diminishing wavelength than in the free space
Group velocity inversely proportional to wavelength
Larger frequency than in the free space
Larger wavelength than in the free space

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