$A$ metallic ring with a small cut is held horizontally and a magnet is allowed to fall vertically through the ring. Then the acceleration of the magnet is:
- Aalways equal to $g$
- Binitially less than $g$ but greater than $g$ once it passes through the ring
- Cinitially greater than $g$ but less than $g$ once it passes through the ring
- Dalways less than $g$
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