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In a permanent magnet at room temperatur...

In a permanent magnet at room temperature.

A

magnetic moment of each molecules is zero

B

the individual molecules have non-zero magnetic moments which are all perfectly aligned

C

domains are partially aligned

D

domains are all perfectly aligned

Text Solution

Verified by Experts

The correct Answer is:
C
Alignment of domains depends upon temperature.
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)
  1. A paramagnetic sample shows a net magnetisation of 8Am^-1 when placed ...

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  2. A permanent magnet in the shape of a thin cylinder of length 10 cm has...

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  3. Hysteresis loops for two magnetic materials A and B are as given below...

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  4. A bar magnet of length 8 cm and having a pole strengh of 1.0 A m is pl...

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  5. Figure shows some of the equipotential surfaces of the magnetic scalar...

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  6. Two long equally magnetized needles are freely suspended by their like...

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  7. At a place on earth, horizontal component of earth's magnetic field is...

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  8. The coercivity of a small magnet where the ferromagnet gets demagnetis...

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  9. Statement A : A proton has spin and magnetic moment just like an elect...

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  10. The figure shows two diamagnetic spheres located near the south pole o...

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  11. Figure shows a loop model (loop L) for a diamagnetic material.

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  12. S is the surface of a lump of magnetic material .

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  13. The primary origin(s) of magnetism lies in

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  14. In a permanent magnet at room temperature.

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  15. A long solenoid has 1000 turns per metre and carries a current of 1A. ...

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  16. Essential difference between electrostatic shielding by a conducting s...

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  17. Let the magnetic field on earth be modelled by that of a point magnet...

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