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Two small balls having equal positive ch...

Two small balls having equal positive charge `Q`(coulomb) on each are suspended by two insulated string of equal length `L` meter, from a hook fixed to a stand. The whole gravity (state of weightlessness). Then the angle between the string and tension in the string is `

A

`180^(@) (1)/(4pi in_(0))`

B

`90^(@)(1)/(4pi in_(0)) Q/L^(2)`

C

`180^(@), (1)/(4pi in_(0)) Q^(2)/(2L^(2))`

D

`180^(@), (1)/(4pi in_(0)) Q^(2)/L^(2)`

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