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Ferromagnetic Substances...

Ferromagnetic Substances

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Because of the re-orientation of the electron spins.
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(a) Give two differences between ferromagnetic and anti-ferromagnetic substances. (b) Tungsten crystallizes in body centred cubic lattice. Calculate the number of unit cells in 1.5 g of tungsten. (At mass of tungsten = 184 u)

With the help of electron spins, clearly distinguish between Ferromagnetic, Antiferromagnetic and Ferrimagnetic substances.

Distinguish between the magnetic properties of dia, para and ferromagnetic substances in terms of (i) susceptibility (ii) magnetic permeability and (iii) Coercivity. Give one example of each of these materials. Draw the field lines due to an external magnetic field near a (i) diamagnetic (ii) paramagnetic substance.

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Magnetic permeability of ferromagnetic substance is

Susceptibility of ferromagnetic substance is

DINESH PUBLICATION-SOLID STATE-ASSIGNMENT
  1. Write the three types of solids on the basis of their ability to condu...

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  2. Although pure silicon is an insulator, then how does it behave as semi...

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  3. Ferromagnetic Substances

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  4. Assertion : On heating ferromagnetic or ferromagnetic substance , the...

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  5. With the help of electron spins, clearly distinguish between Ferromagn...

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  6. What do you understand by paramagnetism and diamagnetism ?

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  7. why does the electrical conductivity of semiconductors increse w...

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  8. How are n-type and p-type semiconductors formed ? Give one example in ...

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  9. What types of semi-conductors will be formed when silicon is doped wit...

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  10. What are piezoelectric crystals ? Give their important uses.

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  11. How will you account for the fact that silicon is an insulator but sil...

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  12. Give one example of 1315 compounds.

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  13. Define the term doping. Pure silicon is an insulator. Silicon doped wi...

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  14. What is the magnetic nature of super-conductors?

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  15. How does the electrical conductivity of super- conductors vary with te...

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  16. What types of crystals show pyroelectricity ?

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  17. What is super conductivity ?

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  18. Give one example of peizoelectric substance.

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  19. FERROMAGNETIC SUBSTANCES

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  20. Explain superconductivity.

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