Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Hard-Class 12
Which of the following statements about the behavior of a bar magnet in relation to the Earth's magnetic field is correct?
A
At null points, the magnetic field from the magnet is equal and opposite to the Earth's magnetic field.
B
The axis of a bar magnet aligns with the Earth's magnetic field only at high altitudes.
C
Null points are always found at a fixed distance from the magnet, regardless of the Earth's magnetic field strength.
D
A bar magnet experiences no torque when aligned with the Earth's magnetic field.
Correct Answer
Option A
Detailed Explanation
At null points, the field due to the magnet is indeed equal and opposite to the horizontal component of the Earth’s magnetic field, confirming option A as correct.
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