Q 1581834727.     A bar magnet is `10 cm` long is kept with its north (N)-pole pointing north. A neutral
point is formed at a distance of `15 cm` from each pole:
Given the horizontal component of earth's field is `0.4` Gauss, the pole strength of the
magnet is

BITSAT 2009
A

`9 A-m`

B

`6.75 A-m`

C

`27 A-m`

D

`1.35 A-m`

HINT

` B_H = (mu_o)/(4pi)xxM/(d^3)`
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