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Question: Answered & Verified by Expert
Consider a metallic pipe with an inner radius of 1 cm. A cylindrical bar magnet of radius 0.8 cm is dropped through the pipe. Why does it take more time to come down than it takes for a similar unmagnetized cylindrical iron bar dropped through the metallic pipe?
ChemistryElectromagnetic InductionNEET
Options:
  • A Eddy currents produced by the magnet oppose the motion, reducing the downward acceleration.
  • B The magnet's magnetic field interacts with the metallic pipe, causing a delay in its descent.
  • C The iron bar has a higher density, leading to faster descent compared to the magnet.
  • D The metallic pipe's frictional force is stronger when the magnet is dropped through it.
Solution:
2753 Upvotes Verified Answer
The correct answer is: Eddy currents produced by the magnet oppose the motion, reducing the downward acceleration.
Correct Option is : (A)
Eddy currents produced by the magnet oppose the motion, reducing the downward acceleration.

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