EXAMIANS
Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
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Spontaneous magnetisation is characteristic of ferromagnetic materials.
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Electrical contact materials used in switches, brushes, relay must possess
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The materials which become polarized on the application of mechanical stress are called piezoelectric.
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As the atoms of rare gases become larger, electronic polarizability
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If a small amount of Cu is added to Ni conductor, then
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If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.
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Which of the following are true for relative dielectric constant?1. It is dimensionless.2. It is equal to 1 for vacuum.3. It is equal to 1 for all substances.
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When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.
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On the basis of the type of chemical bonds, solids may be classified into
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