MATERIALS AND COMPONENTS QUIZ

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 proportional to E.

The nucleus will not be shifted.

The nucleus will be shifted in the direction of E by an amount which is independent of E.

About 2 K

About 10 K

About 200 K

About 600 K

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

Resistivity of Ni remains the same

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

12

14

8

4

True

False

Recombination

Free electrons

Covalent bonding

Thermal energy

In the same direction as current

Normal to both current and magnetic field

In a direction anti parallel to magnetic field

None of these

The superconducting property may be destroyed

The superconducting property is not affected

The material may become an insulator

The superconducting property may be affected and resistivity may increase from zero to a low value

True

False

Remains constant

May increase or decrease with increase in light intensity

Increases with increase in light intensity

Decreases with increase in light intensity