Question # 1

The critical temperature of Aluminum is.

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3.72 K

1.18 K

7.2 K

8.2 K

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

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

Which one is not a crystalline solid.

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Zinc

Copper

Nylon

None of these

The conductors having the conductivity of the order of

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In extrinsic semiconductors doping is of the order of.

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1 atom to 10⁴

1 atom to 10⁶

1 atom to 10⁸

1 atom to 10³

Very weak magnetic field produced by brain can be detected by

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MRI

CAT scans

Squid

CRO

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

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Diamagnetic

Para magnetic

Ferro magnetic

Crystal

Which of the following has least hysteresis loop area.

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Steel

Wrought Iron

Soft Iron

Cobalt

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

Coercive force is used to

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Demagnetize the material

Magnetize the material

Extend it

None of these

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

There is regular arrangement of molecules in:

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Amorphous solids

Crystalline solids

Both a and b

None of above

The ability of a body to return to its original shape is called.

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Strain

Stress

Elasticity

Plasticity

To get N-Type the Ge is doped with

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Aluminium

Arsenic

Boron

Indium

The dimension of stress is

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[MLT^-1]

[ML^-1T]

[ML^-1T^-1]

[ML^-1T^-2]

The ratio of applies stress to volumetric strain is called:

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Young modulus

Shear modulus

Bulk modulus

Tensile modulus

The domain theory of magnet is important to explain the behaviour of

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Diamagnets

Paramagnets

Ferromagnets

All of these

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Physics Fsc Part 2 Chapter 6 Online Test MCQs With Answers

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