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If B1is the magnetic field induction at ...

If `B_1`is the magnetic field induction at a point on the axis of a circular coil of radius R situated at adistance `R sqrt 3` and `B_2` is the magnetic field at the centre of the coil, then ratio of `B_1/B_2` is equal to

A

`1/3`

B

`1/8`

C

`1/4`

D

`1/2`

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