Point A and B are situated along the ext...

Point `A` and `B` are situated along the extended axis of `2 cm` long bar magnet at a distance x and `2x cm` respectively. From the pole nearer to the points, the ratio of the magnetic field at `A` and `B` will be

`4:1` exactly

`4:1` approximately

`8:1` exactly

`8:1` approximately

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