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Two bar magnets are bound together side ...

Two bar magnets are bound together side by side and suspended. They swing in `12s` when their like poles are together and in `16s` when their unlike poles are together, the magnetic moments of these magnets are in the ratio

A

`27:5`

B

`25:7`

C

`7:25`

D

`24:7`

Text Solution

Verified by Experts

The correct Answer is:
B
`T=2pisqrt(I/(MB_(H)))andT_(1)/T_(2)=sqrt((M_(1)-M_(2))/(M_(1)+M_(2)))`
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 2 (C.W)
  1. A bar magnet is placed with its North pole pointing North. Neutral poi...

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  2. The period of a thin magnet in a magnetic field is 2s. It is cut into ...

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  3. A bar magnet suspended in magnetic meridian executes oscillations with...

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  4. Two bar magnets are bound together side by side and suspended. They sw...

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  5. A short bar magnet is oscillating in a magnetic field and its time per...

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  6. When two identical bar magnets placed one above the other, such that t...

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  7. A bar magnet suspended freely in uniform magnetic field is vibrating w...

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  8. A short bar magnet of magnetic moment 2Am^(2) and moment of inertia 6x...

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  9. The period of oscillation of a magnet at a place is 4seconds. When it ...

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  10. The magnetic needle of a vibration magnetometer makes 12 oscillations ...

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  11. The magnetic needle of a V.M.M completes 10 oscillations in 92seconds....

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  12. A magnetic needle has a frequency of 20 oscillations per minute in the...

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  13. A thin iron rod is cut into 10 equal parts parallel to its length. The...

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  14. The dipole moment of each molecule of a paramagnetic gas is 1.5xx10^(-...

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  15. A paramagnetic sample shows a net magnetisation of 8Am^-1 when placed ...

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  16. The angle of dip at a place is 40.6^(@) and the intensity of the verti...

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  17. The correct value of dip angle at a place is 45^(@). If the dip circle...

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  18. A compass needle oscillates 20 times per minute at a place where the d...

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  19. The real angle of dip, if a magnet is suspended at an angle of 30^(@) ...

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  20. At a place the value of B(H) and B(V) are 0.4xx10^(-4)T and 0.3xx10^(-...

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