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MHT CET Physics question

PhysicsMagnetism and MatterMHT CET

Not in JEE Advanced syllabus

A magnet suspended in a horizontal magnetic field makes 30 oscillations per minute. If strength of the field is doubled then the time period of oscillation of the magnet will be :

Answer: (B)

Solution

Initially s; since , doubling gives

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Question ID VK-067905