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 : ?
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 3 only 2 and 3 only 1 and 2 only TRUE ANSWER : ? YOUR ANSWER : ?
Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles. True False TRUE ANSWER : ? YOUR ANSWER : ?
An atom of a rare gas is placed is an electric field E. Then The nucleus will not be shifted. The nucleus will be shifted in a direction opposite to that of E. The nucleus will be shifted in the direction of E by an amount which is independent of E. The nucleus will be shifted in the direction of E by an amount which is proportional to E. TRUE ANSWER : ? YOUR ANSWER : ?
Spontaneous magnetisation is characteristic of ferromagnetic materials. False True TRUE ANSWER : ? YOUR ANSWER : ?
A vacant electronic state moves in the same direction as would a positive charge carrier. True False TRUE ANSWER : ? YOUR ANSWER : ?