Question # 1

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

Which type of impurity is to be added to a pure semi conductor crystal to provide holes.

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Monovalent

Trivalent

Tetravalent

Pentavalent

Energy band theory is based upon

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Hund's Rule

Heisenberg uncertainty principle

Bohr's atomic Model

Wave mechanical model

Which of the following does not undergo plastic deformation.

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Copper

Wrought iron

Head

Glass

To get N-Type the Ge is doped with

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Aluminium

Arsenic

Boron

Indium

A cable breaks if stretched by more than 2mm. It is cut into two equal parts. How much either part can be stretched without breaking?

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25 m

1mm

2mm

0.5 m

Curie temperature is

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Differen for chromium oxide and cobalt

Same for chromium oxide and cobalt

Same for iron and cobalt

None of these

Which one pair belongs to acceptor impurity.

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Aresincl, phosphorus

Boron, gallium

Arsenic, antimony

Antimony, indium

The critical temperature of Aluminum is.

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3.72 K

1.18 K

7.2 K

8.2 K

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

Minority carriers in P-Types , substances are.

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Electrons

Protons

Holes

Neutrons

the substances in which the atoms do not form magnetic dipoles are called.

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Diamagnetic

Para magnetic

Ferro magnetic

Crystal

The ratio of applies stress to volumetric strain is called:

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Young modulus

Shear modulus

Bulk modulus

Tensile modulus

Conductors have conductivities of order:

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10³(Ωm)-1

10⁷(Ωm)^-1

10⁷Ωm^-1

10^-6Ω

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

The curie temp for iron is about

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800^oC

740^oC

750^oC

650^oC

The unit of strain is:

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Nm

Nm^-2

no unit

Nm²

Which one of the following is crystalline solid.

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Zirconia

Glassy solid

Natural rubber

Poly strene

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

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