Physics Of Solids Mcqs

This collections of Multiple choice questions and answers focuses on study of Physics Of Solids. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Physics Of Solids comprehensively.

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7. Physics Of Solids Mcqs

1. A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by

Stress/strain

(stress/strain)

Stress x strain

(Stress / strain)

Conduction band

Valence band

Forbidden band

Core band

3. A ferromagnet will become fully magnetized at

High voltage A.C

Low voltage A.C

Alternating current at its peak value

D.C current at peak value

F?

(F?)

F? 2/L

F?2

2x108 Nm-2

5x106 Nm-2

0.5x10-6 Nm-2

0.2x10-6Nm-2

0.025J

0.50J

0.75J

0.100J

Conduction band

Valence band

Forbidden band

Empty band

8. A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is

The extension of the wire is proportional to the force applied

The weight of the wire is negligible

The wire is not stretched beyond its elastic limit

The cross sectional area of the wire remains constant

9. A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is

(F1+F2) (121+122)

(F1+F2) (122-112)

(F1+F2) (12-11)

(F1+F2) (12-11)

0.01J

0.02J

0.04J

1.0J

Stiffness

Toughness

Extension

Deformation

Demagnetization

Breakage

Extension

Surface cracking

13. Energy needed to magnetize and demagnetize is represented by

Hysteresis curve

Hysteresis loop area

Hysteresis loop

Straight line

Fusion

Polymerization

Crystallization

Subtraction

Conductors

Insulators

Semi conductors

All of the above

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