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

Question # 1

The unit of strain is:

Choose an answer

Nm^-2

no unit

Nm²

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Question # 2

Semiconductors have conductivity of order:

Choose an answer

10^-8 to 10^-6 (Ωm)^-1

10^-6 to 10^-4 (Ωm)^-1

10² to 10⁵ (Ωm)^-1

10^-5 to 10^-7 (Ωm)^-1

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Question # 3

The temperature at which, semiconductor behaves as insulators:

Choose an answer

10k

237k

None of above

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Question # 4

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

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Question # 5

The material whose resistivity becomes zero below a certain temperature

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Conductors

Semi conductors

Super conductors

Insulators

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Question # 6

Insulators have:

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An empty conduction band

Al full valence band

A large energy gap

All of above

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Question # 7

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

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Semiconductor

Super conductor

Conductor

Insulator

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Question # 8

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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Question # 9

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

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Free electrons

Holes

Protons

Mesons

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