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A sphere of radius R carries charge dens...

A sphere of radius R carries charge density p proportional to the square of the distance from the centre such that `p = Cr^(2)`, where C is a positive constant. At a distance R`//`2 from the centre, the magnitude of the electric field is :

A

`(CR^(2))/(20epsi_(0)`

B

`(CR^(2))/(10epsi_(0)`

C

`(CR^(2))/(5epsi_(0)`

D

None of these

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