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Three charges of (+2q), (-q) and (-q) ar...

Three charges of `(+2q), (-q)` and `(-q)` are placed at the corners `A,B` and `C` of an equilateral triangle of side `a` as shown in the adjoining figure. Then the dipole moment of this combination is

A

qa

B

Zero

C

`q a sqrt(3)`

D

`(2)/(sqrt(3))qa`

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The correct Answer is:
C
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