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Q.

A magnet has time period T in a  certain magnetic field. If an identical magnet is kept over it with their moments are perpendicular then the period is _____ T.

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a

214

b

213

c

2

d

2

answer is B.

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Detailed Solution

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T=2πIMB0

I2=2I1

M2=2M1

⇒T2=21/4 T

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A magnet has time period T in a  certain magnetic field. If an identical magnet is kept over it with their moments are perpendicular then the period is _____ T.