1.

A small bar magnet A oscillates in a horizontal plane with a period T at a place where the angle of dip is 60o. When the same needle is made to oscillate in a vertical plane coinciding with the magnetic meridian, its period will be [MP PMT 1992]

A.            \[\frac{T}{\sqrt{2}}\]        
B.            \[T\]
C.            \[\sqrt{2}T\]                         
D.            \[2T\]
Answer» B.            \[T\]


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