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The magnet can be completely demagnetize...

The magnet can be completely demagnetized by

A

Dropping it into ice cold water

B

A reverse field of appropriate strength

C

breaking the magnets into small pieces

D

Heating it slightly

Text Solution

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The correct Answer is:
B
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NIKITA PUBLICATION-MAGNETISM -MCQs
  1. Magnetic moment of a bar magnet is equal to a moment of a couple which...

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  2. A bar magnet produces a field which is similaar to a field produced by...

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  3. The magnet can be completely demagnetized by

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  4. The systerm of two fictitious poles separated by certain distance is c...

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  5. The magnetic dipole moment of a bar magnet each of pole stregth m is g...

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  6. If a circular coil area A,number of turns n carries a current I then i...

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  7. SI unit of magnetic pole strength is

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  8. The S.I unit of magnetic dipole moment is

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  9. The line joining the two poles of a magnet is called as

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  10. The distance between two poles of magnets is called as

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  11. The perpendicular drawn to magnetic axis and passing through centre of...

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  12. The ability of interaction of the either pole of the dipole is

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  13. The product of the magnitude of the pole stregth and the magnetic leng...

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  14. A device cosisting of two fictitious poles separated by a finite dista...

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  15. Magnetic dipole moment is a vector directed from

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  16. A magnet is cut into two pieces perpendicular to its legth,then each p...

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  17. When a magnet is cut into two pieces along its length,then each piece ...

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  18. A short bar magnet has a magnetic moment of 10 Am^(2).If its length is...

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  19. A bar magnet of magnetic moment M is cut into two parts of equal lengt...

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  20. Two identical thin bar magnets, each of length L and pole strength m a...

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