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Give the relation between geometric leng...

Give the relation between geometric length `(l_g)` and magnetic length `(l_m)` of a bar magnet

A

`l_(m) =(5)/(6) l_g`

B

`2l_(m) = (5)/(6) l_(g)`

C

`l_(m) = (6)/(5) l_(g)`

D

`l_(m) = (3)/(5) l_(g)`

Text Solution

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The correct Answer is:
B
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KUMAR PRAKASHAN-MAGNETISM AND MATTER-SECTION D Multiple Choice Questions (MCQs) (MCQs From .DARPAN. Based On Textbook) Bar Magnet, Bar Magnet as Equivalent Solenoid
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  3. Direction of magnetic dipole moment of a magnet is .....

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  4. The magnetism of magnet loses due to .....

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  5. A non magnetic material is that which is .....

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  6. A true test of magnetism is .......

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  7. The unit of pole strength of magnet is ….. (where Q is charge and v is...

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  8. Give the relation between geometric length (lg) and magnetic length (l...

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  9. Pole strength of a magnet is 5 Am and the magnetic length of it is 10 ...

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  10. For most stable position of magnetic dipole in a uniform magnetic fiel...

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  11. Force acting on a magnetic pole of 7xx 10^(-2) Am is 31.5N. Magnetic f...

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  12. The force acting on a north pole of magnet of pole strength 3200 Am an...

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  13. A magnet of magnetic moment 0.1 Am^(2) is placed in a uniform magnetic...

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  14. A and B points are present on the axis of a bar magnet of length 3 cm ...

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  15. For a short bar magnet ("B-axial")/("B-equatorial") is …....

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  16. Magnetic field on t:quatur of Earth is 4 xx 10^(-5) T. Radius of Earth...

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  17. Two magnetic poles of pole strength 20 Am and 15 Am are kept at a dist...

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  18. A bar magnet of length l, pole strength 'p' and magnetic moment overse...

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  19. A system has net charge zero. Can it have magnetic moment ?

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  20. When a current carrying loop is replaced by an equivalent magnetic dip...

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