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Inside a neutral hollow conducting spher...

Inside a neutral hollow conducting sphere of radius X and centre C, a point charge q is placed as shown in the figure. Another point charge `q_1`, is placed outside the sphere at distance d from centre. The net- electrostatic force on charge q placed at the centre is `K=1/(4piepsilon_0)`

A

Zero

B

`(Kq)/(d+X)^2 q_1`

C

`(kqq_1)/X^2`

D

`(kqq_1)/d^2`

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