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Question

A bar magnet is situated on a table along east-west direction in the magnetic field of earth. The number of neutral points, where the magnetic field is zero, are

A
2
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B
0
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C
1
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D
4
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Solution

The correct option is B 2
There are two neutral points possible. This is true in case of any orientation of bar magnet. Since, there are always two tangents of magnetic field due to bar magnet which are directed opposite to earth's magnetic field, where we will have neutral points.

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