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Materials and Components

Materials and Components
The merger of hole and free electron is called

Covalent bonding
Thermal energy
Recombination
Free electrons

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Materials and Components
In a metal, the valence electrons

Are not shared
Either B or C
Are shared by all atoms
Are shared only between neighbouring atoms

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Materials and Components
For making a capacitor it is better to have a dielectric having

High permittivity
Permittivity same as that of air
Low permittivity
Permittivity which is neither high nor low

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Materials and Components
The fact that domains exhibits spontaneous magnetisation is

First hypothesis is of Curie
Curie-Weiss law
Second hypothesis is of Weiss
Boltzmann’s statistics

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Materials and Components
The dielectric losses do not depend on frequency.

False
True

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Materials and Components
In van der walls crystals, there exists a high degree of stability of the outer electron shell.

False
True

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