12th Class Physics MCQS
Coercive force is used to
Extend it
Magnetize the material
None of these
Demagnetize the material
The ratio of applies stress to volumetric strain is called:
Tensile modulus
Shear modulus
Bulk modulus
Young modulus
Recently superconductor discovered is at temperature.
119K
16.3K
143K
110K
Curie temperature is a point where :
Paramagnetism changes to Ferromagnetism
Ferromagnetism changes to paramagnetism
Diamagnetism changes to paramagnetism
Paramagnetism changes to Diamagnetism
The dimension of stress is
[ML-1T-1]
[MLT-1]
[ML-1T]
[ML-1T-2]
Energy band theory is based upon
Bohr’s atomic Model
Wave mechanical model
Hund’s Rule
Heisenberg uncertainty principle
A cable breaks if stretched by more than 2mm. It is cut into two equal parts. How much either part can be stretched without breaking?
2mm
1mm
0.5 m
25 m
The word amorphous means:
Regular structured
Frozen structured
None of above
Without form or structure
Conductors have conductivities of order:
107(?m)-1
10-6?
103(?m)-1
107?m-1
The solids are classified as
Polymeric
Crystalline
All of above
Amorphous
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