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  3. Physics
  4. A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

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Q. A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

AIPMTAIPMT 1996

Solution:

When the magnet is dropped through the ring an induced current is developed into the ring in the direction opposing the motion of magnet
(Lenz's law). Therefore this induced current decreases the acceleration of bar magnet.