In a metal, the valence electrons Either B or C Are shared only between neighbouring atoms Are shared by all atoms Are not shared TRUE ANSWER : ? YOUR ANSWER : ?
The most important set of specifications of transformer oil include viscosity and flash point flash point and viscosity dielectric strength and viscosity dielectric strength and flash point TRUE ANSWER : ? YOUR ANSWER : ?
In van der walls crystals, there exists a high degree of stability of the outer electron shell. False True TRUE ANSWER : ? YOUR ANSWER : ?
Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied. True False TRUE ANSWER : ? YOUR ANSWER : ?
Schrodinger wave equation is a Partial differential equation None of these Linear equation Differential equation TRUE ANSWER : ? YOUR ANSWER : ?
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. 1, 2 and 3 1 and 2 only 2 and 3 only 1 and 3 only TRUE ANSWER : ? YOUR ANSWER : ?
With increase in temperature, the electrical conductivity would Increase in metals but decrease in intrinsic semiconductor Decrease in metals but increase in intrinsic semiconductor Increase in metals as well as in intrinsic semiconductor Decrease in metals as well as in intrinsic semiconductor TRUE ANSWER : ? YOUR ANSWER : ?
The materials which become polarized on the application of mechanical stress are called piezoelectric. False True TRUE ANSWER : ? YOUR ANSWER : ?
In an intrinsic semiconductor, at a given temperature T The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination Any of the above The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination TRUE ANSWER : ? YOUR ANSWER : ?
At room temperature the number of conducting electrons in an intrinsic semiconductor Is almost equal to the number of valence electrons Is small as compared to the number of valence electrons Is about half the number of valence electrons Is a very small fraction of the number of valence electrons TRUE ANSWER : ? YOUR ANSWER : ?