Question # 1

At 0 K a piece of silicon is a

Choose an answer

Conductor

Semi-conductor

Insulator

All

In extrinsic semiconductors doping is of the order of.

Choose an answer

1 atom to 10⁴

1 atom to 10⁶

1 atom to 10⁸

1 atom to 10³

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

Choose an answer

Diamagnets

Paramagnets

Ferromagnets

All of these

A wire stretched to double of its length, its strain is:

Choose an answer

2

1

0

0.5

Out of the following which material is brittle.

Choose an answer

Wrought iron

Copper

Tungsten

High steel carbon

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

Choose an answer

Young's modulus

Bulk modulus

Modulus of elasticity

None of these

Example of ductile substance is.

Choose an answer

Glass

Wood

Lead

Oxygen

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

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

Choose an answer

Monovalent

Trivalent

Tetravalent

Pentavalent

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

Choose an answer

Strain

Stress

Elasticity

Plasticity

The first superconductor was discovered in:

Choose an answer

1831

1911

1921

1876

In glass, molecules are irregularly arranged so it is known as.

Choose an answer

Solid

Liquid

Solid liquid

Gas

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?

Choose an answer

25 m

1mm

2mm

0.5 m

The unit of strain is:

Choose an answer

Nm

Nm^-2

no unit

Nm²

The temperature at which, semiconductor behaves as insulators:

Choose an answer

10k

0k

237k

None of above

The critical temperature of mercury is.

Choose an answer

1.18 K

4.2 K

3.72 K

7.2 K

Which one is pentavalent impurity

Choose an answer

Boron

Gallium

Antimony

Indium

More Classes

Other Links

Ics Part 2 Physics Chapter 6 Test Online MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer