Question # 1

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

Very weak magnetic field produced by brain can be detected by

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MRI

CAT scans

Squid

CRO

Which one is not a crystalline solid.

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Zinc

Copper

Nylon

None of these

Donor impurities are

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Germanium, silicon

Indium, galium

Antimony, arsenic

Diamond, carbon

A solid in which there is not regular arrangement of molecules is called.

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Glassy solid

Amorphous solid

Crystalline solid

Both a and b

Those materials whose resistivity becomes zero at certain temperature is called:

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Semiconductor

Super conductor

Conductor

Insulator

There are different crystal systems. The number of these crystal system is.

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3

4

5

7

Natural rubber is an example of:

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Crystalline solids

Amorphous solids

Polymeric solids

None of above

Conductors have conductivities of order:

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10³(Ωm)-1

10⁷(Ωm)^-1

10⁷Ωm^-1

10^-6Ω

After curie temperature.

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Ferromagnetic

Paramagnetic

Magnetic

Diamagnetic

Glass and high steel carbon are example of.

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Ductile substances

Brittle substances

Soft substances

Hard substances

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

The material whose resistivity becomes zero below a certain temperature

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Conductors

Semi conductors

Super conductors

Insulators

Insulators have:

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An empty conduction band

Al full valence band

A large energy gap

All of above

In 'N' type material, the minority charge carriers are.

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Free electrons

Holes

Protons

Mesons

Which of the following has least hysteresis loop area.

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Steel

Wrought Iron

Soft Iron

Cobalt

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

Minority carriers in P-Types , substances are.

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Electrons

Protons

Holes

Neutrons

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

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