The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as Debye rule Matthiessen’s rule Onne’s rule Curie rule TRUE ANSWER : ? YOUR ANSWER : ?
As the atoms of rare gases become larger, electronic polarizability Increases May increase or decrease Decreases Remains the same TRUE ANSWER : ? YOUR ANSWER : ?
An atom of a rare gas is placed is an electric field E. Then The nucleus will be shifted in the direction of E by an amount which is proportional to E. 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 not be shifted. 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 and 3 only 1 and 2 only 2 and 3 only 1, 2 and 3 TRUE ANSWER : ? YOUR ANSWER : ?
Electrical contact materials used in switches, brushes, relay must possess Low thermal conductivity and low melting pointL Low thermal conductivity and high melting point High thermal conductivity and high melting point High thermal conductivity and low melting point TRUE ANSWER : ? YOUR ANSWER : ?
Spontaneous magnetisation is characteristic of ferromagnetic materials. True False TRUE ANSWER : ? YOUR ANSWER : ?
With increase in temperature, the electrical conductivity would Decrease in metals as well as in intrinsic semiconductor 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 TRUE ANSWER : ? YOUR ANSWER : ?