Multiple choice general knowledge science & technology

The distance between the magnetic north pole and magnetic south pole of a bar magnet is called the

  1. equatorial axis

  2. effective length

  3. length of magnet

  4. magnetic axis
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B Correct answer
Explanation

The effective length of a bar magnet is the distance between its north and south magnetic poles. This is slightly less than the physical length because the poles are located slightly inside the ends of the magnet, not at the very tips.

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