A bar magnet is oscillating in the earth's magnetic field with time pe – McqOptions

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1.	A bar magnet is oscillating in the earth's magnetic field with time period T. If its mass is increased four times then its time period will be [J & K CET 2004]
A.	4 T
B.	2 T
C.	T
D.	T/2
Answer» C. T

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