A freely suspended magnet oscillates with period T in earth's horizont – McqOptions

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1.	A freely suspended magnet oscillates with period T in earth's horizontal magnetic field. When a bar magnet is brought near it, such that the magnetic field created by bar magnet is in same direction as earth's horizontal magnetic field, the period decreases to T/2. The ratio of the field of the magnet F to the earth's magnetic field (H) is
A.	1 : 3
B.	1 : 1
C.	3 : 1
D.	0.375694444444444
Answer» D. 0.375694444444444

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