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MHT CET Physics question

PhysicsMagnetism and MatterMHT CET

Not in JEE Advanced syllabus

A bar magnet of negligible thickness suspended in a uniform magnetic field horizontal & its period is 2 s. If the magnet is cut along the bisector and a piece of a magnet suspended, then its period of oscillation will be

Answer: (D)

Solution

Cutting across the middle halves the length and pole strength, so and \tfrac{1}{12}$m

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Question ID VK-067897