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Demagnetization of magnets can be done b...

Demagnetization of magnets can be done by

A

Rough handling

B

Heating

C

Magnetising in the opposite direction

D

All of the above

Text Solution

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The correct Answer is:
D
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A2Z-MAGNETISM AND MATTER-Magnetic Materials
  1. Magnets cannot be made from which of the following substances?

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  2. Which of the following is most suitable for the core of electromagnets...

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  3. Demagnetization of magnets can be done by

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  4. A ferromagnetic material is heated above its curie temperature. Which ...

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  5. If a diamagnetic substance is brought near north or south pole of a ba...

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  6. The material of permanent magnet has

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  7. A diamagnetic material in a magnetic field moves

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  8. Which one of the following is a non-magneticsubstance?

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  9. Liquid oxygen remains suspended between two pole faces of a magnet bec...

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  10. Temperature above which a ferromagnetic substance becomes paremagnetic...

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  11. Curie-Weiss law is obeyed by iron at a temperature….

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  12. Curie's law can be written as

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  13. The variation of magnetic susceptibility (chi) with temperature for a ...

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  14. The variation of magnetic susceptibility (chi) with magnetising field ...

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  15. The variation of magnetic susceptibility (chi) with absolute temperatu...

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  16. The chi-(1//T) graph for an alloy of paramagnetic nature is shown in F...

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  17. Which of the following is true?

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  18. A superconductor exhibits perfect

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  19. Identify the paramagnetic substance

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  20. If a magnetic substance is kept in a magnetic field, then which of the...

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