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The period of oscillations of a magnet is 2 s. When it is remagnetised so that the pole strength is 4 times, its period will be
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Correct option is C
T∝1M⇒T∝1mIf m → 4 times, then T→12 times i.e., T'=T2=22=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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