Assignment III(CSE-C)

1. If the magnetic susceptibility of a material is large and positive, then the material exhibits
    (a) diamagnetism     (b) paramagnetisim     (c) ferromagnetism    (d) antiferromagnetism

2. When a material expels all the magnetic flux lines, then it is said to exhibit
    (a)diamagnetism     (b) paramagnetism      (c) ferromagnetism    (d) antiferromagnetism

3. When a material has equal magnetic moments with anti parallel alignment, then it is
    (a)diamagnetic       (b) paramagnetic         (c) ferromagnetic       (d) antiferromagnetic

4. A magnetic material with large retentivity and coercivity is called
    (a)soft magnetic material   (b) hard magnetic material   (c)soft superconductor (d)dielectric

5. The energy associated with the change in dimension of magnetic material in a magnetic field is
    (a)coulombic energy    (b) short range energy   (c) magnetostrictive energy  (d) kinetic energy

6. A phenomenon of superconductor related to the expulsion of magnetic flux lines is
    (a)Kerr effect      (b) Meissner effect      (c) Faraday effect     (d) Josephson effect

7. In the isotopes of superconductor, the critical temperature is inversely proportional to
    (a)Atomic mass     (b) Atomic number     (c) magnetic field    (d) electric field

8. In high Tc superconductors, the critical temperature will be found
    (a)near absolute zero    (b)near zero degree celsius  (c) above zero degree  (d) near room temp.

9. Type I superconductors are widely used in many applications.Say True or False.

10.  If a high value electric current is allowed to pass through a superconducting material, the current       flows through the material persistently. Say True or False

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