Question

The magnetic field on the axis of a short bar magnet at a
distance of 40 cm is 0.4 oersted. What will be the field at a point
distant 20 cm on the line perpendicular to the axis and passing
through the magnet

i.0.4 oersted
ii.1.6 oersted
iii.2.1 oersted
iv.1.1 oersted

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Answer 1

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https://www.toppr.com/ask/question/92-the-magnetic-field-on-the-axis-of-a-short-bar-magnet-atdistance-of-10/