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.Management Sciences
Category: Physics Of Solids
A ferromagnet will become fully magnetized at_________________?
A. High voltage A.C
B. Low voltage A.C
C. Alternating current at its peak value
D. D.C current at peak value
A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________?
A. The extension of the wire is proportional to the force applied
B. The weight of the wire is negligible
C. The wire is not stretched beyond its elastic limit
D. The cross sectional area of the wire remains constant
The ration stress to strain in youngs modulus of the material then tension is__________________?
A. Directly proportional to extension
B. Directly proportional to strain
C. Directly proportional to square of amplitude
D. Inversely proportional to extension
With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?
A. Decreases
B. Increases
C. Remains same
D. First increases then decreases
A vacant or partially filled band is called _____________________?
A. Conduction band
B. Valence band
C. Forbidden band
D. Empty band
Formation of large molecule by joining small molecules is_________________?
A. Fusion
B. Polymerization
C. Crystallization
D. Subtraction
In a semiconductors the charge carriers are ___________________?
A. Holes only
B. Electrons only
C. Electron and holes both
D. All of the above
Any alteration produced in shapes length or volume when a body is subjected to some external force is called____________________?
A. Stiffness
B. Toughness
C. Extension
D. Deformation
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