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As shown in fig. a metal ring is held ho...

As shown in fig. a metal ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is ……

A

equal to g

B

less than g

C

more than g

D

depends on diameter of ring and length of magnet

Text Solution

Verified by Experts

The correct Answer is:
B
When the N pole of magnet moves with acceleration g (freely falls) towards coil, according to Lenz.s law N pole is induced in the coil, so due to repulsive force. Now the acceleration of magnet become less than g.
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