Magnetic Materials & Superconductivity

Physics:

Important Questions related to chapter --Magnetic Materials and Superconductivity



2-marks/4-marks

Q1. Derive the relation b/w Permeability and Susceptibility.
Q2.State and explain the chief origin of magnetic moment for electrons.
Q3. State any four characteristics of ferromagnetic materials.
Q4. Define 1) Curie Temperature 2) Neel Temperature .
Q5. Define 1) Remanence 2) Coericivity .
Q6. What are ferrites? State few properties of ferrites. Give their useful applications.
Q7. What is magnetostriction?
Q8. What is magnetic anisotropy?
Q9. Differentiate b/w Soft and Hard magnetic materials.
Q10. Define 1) Magnetic flux density 2) Intensity of magnetisation .
Q11. Why ferromagnetism is lost on heating?
Q12. What is Meissners effect?

Q13. What do you mean by Cooper pairs?
Q14. Compare Type-I and Type-II superconductors.
Q15. Define critical magnetic field and critical temperature of a superconductor.
Q16. What is Superconductivity? Define persistent current.
Q17.  What is the difference b/w perfect Diamagnet and  Superconductor?


6-Marks/8-marks

Q1. State and explain Domain Theory of ferromagnetism.

OR

      Discuss domain structure in ferromagnetic materials.
Q2. i)Explain BCS theory of superconductivity.
      ii) Explain Meissner Effect.
Q3. What are London Equations? Explain the expression for the penetration depth of
       Superconductors.




Important questions related to chapter LASERS .
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