In a vibration magnetometer, the time period of a bar magnet oscillating in horizontal component of earth's magnetic field is 2 sec. When a magnet is brought near and parallel to it, the time period reduces to 1 sec. The ratio 
of the horizontal component 
and the field 
due to magnet will be
A
3
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
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