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Which of the following gets demagnetised...

Which of the following gets demagnetised when a powerful magnet is kept mear to it?

A

Compact disc

B

Cellphone

C

Both (a) and (b)

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Compact disc and cellphone has magnet inside them which get demagnetised when a powerful magnet is kept near them.
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MTG IIT JEE FOUNDATION-FUN WITH MAGNETS-Exercise (Multiple Choice Questions) (LEVEL - 2)
  1. Which of the following gets attracted towards a magnet?

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  2. is the surest test of magnetisation.

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  3. Which of the following gets demagnetised when a powerful magnet is kep...

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  4. Back of credit cards/ATM cards are designed with metal strip made of

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  5. Magnetic force is when two magnets are kept far apart.

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  6. Which of the following is indicated by a magnetic compass?

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  7. When a magnet is placed on a wooden plate with some iron nails spread ...

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  8. Temporary magnets are made of

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  9. Alnico is an alloy of

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  10. If you break a magnet into 6 pieces, how many north and how many south...

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  11. Which of the following do not have any effect when a powerful magnet i...

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  12. How many keepers does a horseshoe magnet need for its storage?

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  13. A substance consisting of a coil of wire with an iron core and is only...

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  14. If one stands facing the east, then north will be on his/her side and...

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  15. Artificially designed magnets .

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  16. Now-a-days magnets are made of

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  17. Which of the following is true about magnets?

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  18. Magnets was found in a place called

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  19. When a soft iron rod is put inside a current carrying coil, the streng...

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  20. High-speed magnetic levitation trains run without touching the track, ...

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