In a long hollow vertical metal pipe a magnet is dropped. During its fall, the acceleration of magnet

will decrease linearly

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will decrease upto a value which is less than

g

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will decrease to zero and will attain a terminal speed

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may increase or decrease

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Solution

The correct option is C will decrease to zero and will attain a terminal speed
The falling magnet will experience an upward force and
so the acceleration of magnet will decreases and then the magnet will a quire a terminal speed.
Hence $C$ is the correct answer.

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In a long hollow vertical metal pipe a magnet is dropped. During its fall, the acceleration of magnet

The correct option is C will decrease to zero and will attain a terminal speedThe falling magnet will experience an upward force and so the acceleration of magnet will decreases and then the magnet will a quire a terminal speed.Hence C is the correct answer.

The correct option is C will decrease to zero and will attain a terminal speed
The falling magnet will experience an upward force and
so the acceleration of magnet will decreases and then the magnet will a quire a terminal speed.
Hence $C$ is the correct answer.