A short bar magnet has point \( A \) and \( B \) along its axis at ...

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A short bar magnet has point \( A \) and \( B \) along its axis at a distance of \( 24 \mathrm{~cm} \) and \( 48 \mathrm{~cm} \) from centre on the opposite sides. Ratio of magnitude of magnetic fields at these points will be
(1) 2
(2) 8
(3) 3
(4) 4
\( \mathrm{P} \)
W
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