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Magnetic induction of the equilateral po...

Magnetic induction of the equilateral point od short magnet at distance r from the centre of dipole is `vec B`. its value at an axial point at same magnet and at same distance is

A

`( –(vec B)/2)`

B

`vec B/2`

C

`2 vec B`

D

`-2 vec B`

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