A short bar magnet with its north pole facing north forms a neutral point at 
in the horizontal plane. If the magnet is rotated by 
in the horizontal plane, the net magnetic induction at 
is (Horizontal component of earth's magnetic field 
)
A
0
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Initially
Neutral point obtained on equatorial line and at neutral point 
where B H = Horizontal component of earth’s magnetic field, B e = Magnetic field due to bar magnet on it’s equatorial line
Finally
Point P comes on axial line of the magnet and at P, net magnetic field 
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