Q.
A long bar magnet of time period T is cut into four equal parts by cutting it perpendicular to both length and breadth. The time period of each part is
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a
T/4
b
T/16
c
T/32
d
T/2
answer is D.
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Detailed Solution
MI, I=ml212 ; I1I=14 x 14 ; M1M=14TT1=M1IMI1=4=2 ; T1=T2
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