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Physics Of Solids Set 1
Results
#1.
The first supper conductor was discovered by
Fermi
Fermi
Kmaerling
Kmaerling
Weinberg
Weinberg
None
None
#2.
The substance in which the atoms don't form magnetic dipole are called:
Ferromagnetic
Ferromagnetic
Paramagnetic
Paramagnetic
Diamagnetic
Diamagnetic
Conductors
Conductors
#3.
The combination of solenoid and a specimen of iron inside it make a powerful magnet called
Horse shoe magnet
Horse shoe magnet
Bar magnet
Bar magnet
Electromagnet
Electromagnet
None of these
None of these
#4.
A well-known example of an intrinsic semi- conductor is:
Germanium
Germanium
Phosphorous
Phosphorous
Aluminum
Aluminum
Cobalt
Cobalt
#5.
The energy need to magnetize and demagnetize the specimen during the each cycle of magnetizing current is
Value of current
Value of current
Value of demagnetizing current
Value of demagnetizing current
Value of magnetic flux density
Value of magnetic flux density
Area of the loop
Area of the loop
#6.
The temperature below which resistivity of some materials becomes zero, is called:
Kelvin temperature
Kelvin temperature
Critical temperature
Critical temperature
Absolute zero temperature
Absolute zero temperature
Limiting temperature
Limiting temperature
#7.
The magnetism produced by electrons within an atom is due to
Spin motion
Spin motion
Orbital motion
Orbital motion
Spin & orbital motion
Spin & orbital motion
None of these
None of these
#8.
Strain is dimensionless and has
Units
Units
No units
No units
S.I units
S.I units
None
None
#9.
A current which demagnetize the material completely is called
Applied current
Applied current
Coercive current
Coercive current
Maximum current
Maximum current
None of these
None of these
#10.
Minority carriers in N-type materials are
Electrons
Electrons
Protons
Protons
Neutrons
Neutrons
Holes
Holes
Finish
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