Questions
A small bar magnet A oscillates in a horizontal plane with a period T at a place where the angle of dip is . When the same needle is made to oscillate in a vertical plane coinciding with the magnetic meridian, its period will be
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Correct option is A
T=2πIMB⇒TT'=B'B=BBH⇒TT'=1cosϕ=1cos60o=2⇒T'=T2
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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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