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Two short dipoles phat(k) and P/2 hat(k)...

Two short dipoles `phat(k)` and `P/2 hat(k)` are located at `(0,0,0)` & `(1m, 0,2m)` respectively. The resultant electric field due to the two dipoles at the point `(1m, 0,0)` is

A

`(9 p)/(32pi in_0) hatk`

B

`(-7p)/(32pi in_0) hatk`

C

`(7p)/(32pi in_0) hatk`

D

none of these

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The correct Answer is:
B
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