1.

In the given diagram, there is a conducting sphere of radius r which is surrounded by a dielectric of relative permittivity epsilon_(r). If conducting sphere is given charge q, then surface density of polarization charges, on the outer surface of the dielectric layer, is

Answer»

`(epsilon_(R)Q)/(4PI r_(2)^(2))`
`(q)/(4pi epsilon_(r)r_(2)^(2))`
`((epsilon_(r)-1)q)/(4pi r_(2)^(2))`
`((epsilon_(r)-1)q)/(4piepsilon_(r)r_(2)^(2))`

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