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Two concentric shells have radii R and 2...

Two concentric shells have radii R and `2R` charges `q_A` and `q_B` and potentials `2V` and `(3/2)V` respectively. Now, shell B is earthed and let charges on them become `q_A'` and `q_B'`. Then,

A

`q_(A)//q_(B) = 1//2`

B

`q_(A)'//q_(B)' = 1`

C

Potential of A after earthing becomes (3/2) V

D

None of these

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A
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