Question # 1

The word amorphous means:

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Regular structured

Without form or structure

Frozen structured

None of above

Insulators have:

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An empty conduction band

Al full valence band

A large energy gap

All of above

The SI unit of stress is same as that of.

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Pressure

Force

Momentum

Work

A pentaralent impurity in Si

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a free electron and a free hole

a free hole

a free electron

No free particle

After curie temperature.

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Ferromagnetic

Paramagnetic

Magnetic

Diamagnetic

Which one of the following is crystalline solid.

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Zirconia

Glassy solid

Natural rubber

Poly strene

The critical temperature of Aluminum is.

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3.72 K

1.18 K

7.2 K

8.2 K

The SI unit of Stress is:

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Nm

Nm²

NM^-2

Nm³

An ordinary glass gradually softness into a paste like state before it becomes a very viscous liquid which is possible at

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900^oC

600^oC

800^oC

100^oC

Energy band theory is based upon

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Hund's Rule

Heisenberg uncertainty principle

Bohr's atomic Model

Wave mechanical model

Very weak magnetic field produced by brain can be detected by

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MRI

CAT scans

Squid

CRO

The unit of strain is:

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Nm

Nm^-2

no unit

Nm²

Substance which break just after the elastic limit is reached are called as.

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Ductile substances

Hard substances

Britto substances

Soft substances

To get N-Type the Ge is doped with

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Aluminium

Arsenic

Boron

Indium

The material whose resistivity becomes zero below a certain temperature

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Conductors

Semi conductors

Super conductors

Insulators

Conductors have conductivities of order:

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10³(Ωm)-1

10⁷(Ωm)^-1

10⁷Ωm^-1

10^-6Ω

At 0 K a piece of silicon is a

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Conductor

Semi-conductor

Insulator

All

A solid having regular arrangement of molecules throughout its structure is called.

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Amorphous solid

Polymeric solid

Crystalline solid

Glassy solid

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Physics ICS Part 2 Chapter 17 Online MCQ's Test MCQs With Answers

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