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A point charge q(1)=+6e fixed at the ori...


A point charge `q_(1)=+6e` fixed at the origin of a coordinate system, and another point charge `q_(2)=-10e` is fixed at `x=8nm`, `y=0` the locus of all points in the xy plane for which potential `V=0` (other man inifinity) is a circle centered on the x-axis as shown.
Q. Radius R of the circle is

A

7.5 nm

B

3 nm

C

6 nm

D

9 nm

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A
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