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Consider two concentric spherical metal shells of radii `r_(1)` and `r_(2) (r_(2) gt r_(1))`. If the outer shell has a charge q and the inner one is grounded, then the charge on the inner shell is

A

zero

B

`-(r_(1)//r_(2))q`

C

`r_(1)r_(2)q`

D

`oo`

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The correct Answer is:
B
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