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A small hole is made at the centre of th...

A small hole is made at the centre of the magnet then its magnetic moment

A

decreases

B

increases

C

remains same

D

depends on the nature of the magnetic materical

Text Solution

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The correct Answer is:
A
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NARAYNA-MAGNETISM-C.U.Q
  1. A bar magnet of moment M is bent into arc, its moment

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  2. Abar magnet is cut into two equal halves by a plane parallel to the ma...

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  3. A small hole is made at the centre of the magnet then its magnetic mom...

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  4. The source of magnetic field is

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  5. The erth's magnetic field

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  6. The electric and magnetic field lines differ in that

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  7. The incorrect statement regarding the lines of force of the magnetic f...

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  8. Two bar magnets are placed on a piece of cork which folats on water. T...

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  9. When a bar magnet of magnetic moment barM is placed in a magnetic fiel...

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  10. The lines of forces due to earth's horizontal component of magnetic fi...

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  11. In case of a bar magnet, lines of magnetic induction

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  12. The total number of magnetic lines of force originating or terminating...

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  13. A magnetic needle is kept in a non uniform magnetic field . It experie...

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  14. A bar magnet of moment bar(M) is in a magnetic field of induction bar...

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  15. The effect due to uniform magnetic field on a freely suspended magneti...

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  16. A magnet is kept fixed with its length parallel to the magnetic meridi...

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  17. There is no. couple acting when two bar magnets are placed co-axially ...

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  18. Find the wrong statement among the following. Two unlike isolated magn...

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  19. A magnetic field is produce and directed along y-axis. A magnet is pl...

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  20. When N-pole of the given bar magnet is placed on a table pointing geog...

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