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Which of these does not use a magnet?...

Which of these does not use a magnet?

A

LCD TV

B

electric fan

C

computer hard disk

D

DVD

Text Solution

Verified by Experts

The correct Answer is:
D
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MTG IIT JEE FOUNDATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE ( MULTIPLE CHOICE QUESTIONS)
  1. Which of the following is not a magnetic material?

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  2. The magnetic strength of a magnet

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  3. Which of these does not use a magnet?

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  4. A freely suspended magnet comes to rest in the direction.

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  5. Which of the following cannot happen, irrespective of whether the give...

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  6. An example of a natural magnet is.

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  7. A rectangular piece is brought near the north pole of a magnet. It get...

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  8. If the magnet is heated strongly on the flame.

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  9. Which of the following is not correct about the magnetic field lines?

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  10. The property of attracting small pieces of iron by a substance is refe...

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  11. A magnetic field cannot exert any force on a

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  12. For making an electromagnet the best material to be used is

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  13. Choose the wrong statement

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  14. Magnetic lines of force

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  15. Which of the following figures represents the magnetic lines of force ...

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  16. Which of the following figures represents the magnetic lines of force ...

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  17. Magnetic field lines are closer where the magnetic field is

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  18. A uniform magnetic field is represented by

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  19. Magnetic needle is in the form of elongated

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  20. Space around a magnet in which the force of attraction and repulsion d...

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