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The period of oscillation of a magnet in vibration magnetometer is 2 s. The period of oscillation of a magnet whose magnetic moment is four times that of the first magnet is
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Correct option is A
T1T2=M2M1=4MM=2⇒2T2=2⇒T2=1 s
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The time period of a freely suspended magnet is 4 seconds. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be
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