NEET Physics Bar Magnet MCQ Question
Which of the following statements about a bar magnet and its magnetic field configuration is correct?
The null points of a bar magnet are located at equal distances along its axis from the center.
A bar magnet aligned with the Earth's magnetic field will experience a torque that aligns it parallel to the field.
The total magnetic field at the null point is zero due to the cancellation of the magnet's field and the Earth's field.
Reversing the orientation of a bar magnet by 180° will not change the location of its null points.
Correct Answer
Detailed Explanation
At the null points, the magnetic field due to the bar magnet is equal and opposite to the horizontal component of the Earth's magnetic field, resulting in a total magnetic field of zero.
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