When a bar magnet is placed in earth's magnetic field, neutral points are obtained. At neutral point
Net magnet field is zero
Earth's magnetic field is not present
Magnetic field due to bar magnet is not present
Horizontal component of earth's magnetic field and magnetic field due to bar magnet are present and they are equal in magnitude and opposite in direction.
A
Magnetic field due to bar magnet is not present
B
Net magnet field is zero
C
Horizontal component of earth's magnetic field and magnetic field due to bar magnet are present and they are equal in magnitude and opposite in direction.
D
Earth's magnetic field is not present
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Solution
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The magnetic field line of the earth resemble these of a bar magnet.
Its magnetic field lines are parallel, at equator to earth surface.
These are horizontal earth magnetic field.
When the magnetic and horizontal components of earth's magnetic field are equal and oppose makes the point a neutral point.
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