A bar magnet oscillates in a region of uniform magnetic field with time period t. Now a piece of wood identical in all respects in term of mass and length is joined with bar magnet as shown. The new time period of oscillation is
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The time period of oscillation of a magnet in a uniform magnetic field 'B' is given by
T=2π√I/mB
Where m is the magnetic moment , I is the moment of inertia
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