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The charge density on the surface of a c...

The charge density on the surface of a conducting sphere is `6.4xx10^-6c//m^2` and the electric intensity at a distance of 1 m from the center of the sphere is `4pixx10^4N//C`. The radius of the sphere is :

A

0.42 m

B

0.2 m

C

0.6 m

D

0.19

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The correct Answer is:
A
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