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Two point charges q each placed at a dis...


Two point charges `q` each placed at a distance `R` from each other in vacuum. The force between is `F_(1)` one of the charges is spread uniformly over the surface of a hemispherical bowl of radius R, while the other is spread uniformly over the volume of a sphere `r(rlt(R)/(2))` and both have a common centre O. the force on the sphere is `(F_(1))/(n)`. then n is

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