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When an iron bar is moved over a bar mag...

When an iron bar is moved over a bar magnet along its length the attractive force______

A

increases first and then decreases

B

decreases first and then increases

C

remains same

D

increase

Text Solution

Verified by Experts

The correct Answer is:
B
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PEARSON IIT JEE FOUNDATION-MAGNETISM -CONCEPT APPLICATION (Level 1)
  1. The direction of magnetic field at any point inside the field is given...

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  2. Which of the following is a non- magnetic substance ?

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  3. When an iron bar is moved over a bar magnet along its length the attra...

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  4. The attracting power of a magnet is

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  5. The above diagrame is the pattern of magnetic lines of force obtained ...

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  6. In the single touch method of magnetization , the north pole of a bar ...

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  7. Assertion: Magnetic lines of force never intersect. Reason: The dire...

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  8. The vertical plane in which magnetic needle lies at a place is called

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  9. The effective length of the magnet shown above is

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  10. The equatorial meridian of a magnet

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  11. A bar magnet is moved over a steel bar as shown in the figure. Choos...

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  12. When a magnet is broken into two parts,

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  13. In the electrical method of magnetization, the polarity of the end in ...

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  14. An electric bell works on the principle of

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  15. The angle of declination is

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  16. Ewing's molecular theory does not explain

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  17. Which of the following substance is repelled by strong magnet ?

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  18. In Which of the following devices is a permanent magnet not used ?

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  19. A substance placed near a strong magnet is attracted by it, substance ...

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  20. In an unmagnetised iron bar, the molecules form .

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