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Two small bar marnets are placed in a li...

Two small bar marnets are placed in a line with like poles facing each other at a certain distance d apart. If the length of each magnet is neglifible as compared to d, the force between them will be inversely proportional to

A

`d`

B

` d^(2)`

C

` 1/d^(2)`

D

` d^(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
`F=mu_(0)/(4pi)((6MM^('))/d^(4))` in end-on position.
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A2Z-MAGNETISM AND MATTER-Section D - Chapter End Test
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  6. Two identical short bar magnets, each having magnetic moment M, are pl...

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  16. Magnetic intensity for an axial point due to a short bar magnet of mag...

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  17. A small rod of bismuth is suspended freely between the poles of a stro...

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  18. Magnetic moment of two bar magnets may be compared with the help of

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  20. The angle of dip at a certain place is 30^(@). If the horizontal compo...

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