A short bar magnet of magnetic moment `12.8xx10^(-3)Am^(2)` is arranged in the magnetic meridian with its south pole pointing ge

A short bar magnet of magnetic moment `12.8xx10^(-3)Am^(2)` is arranged in the magnetic meridian with its south pole pointing geographic north. If `B_(H)=0.4` gauss, the distance between the null points is
A. `4cm`
B. `8cm`
C. `12cm`
D. `16cm`

A short bar magnet of magnetic moment `12.8xx10^(-3)Am^(2)` is arranged in the magnetic meridian with its south pole pointing geographic north. If `B_

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