Question

A solid spherical conductor of radius R has a spherical cavity
of radius a (a <R) at its centre. A charge +Q is kept at the
center. The charge at the inner surface, outer and at a
position r(a <r<R) are respectively [VITEEE 2008]
(a) +Q. -Q,0
(b) –Q,+Q,0
(c) 0, -0,0
(d) +0,0,0​

Answer 1

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