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The capacity of an isolated sphere is in...

The capacity of an isolated sphere is increased n times when it is enclosed by an earthed concentric sphere. The ratio of their radii is

A

`(n^(2))/(n-1)`

B

`(n)/(n-1)`

C

`(2n)/(n+1)`

D

`(2n+1)/(n+1)`

Text Solution

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The correct Answer is:
B
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