Question # 1

Distinguished between p-type semiconductor and n-type semiconductor.

Ans 1: p-type semiconductor:When a trivalent impurity such as aluminium is added into the semiconductor,holes are generated and p type semiconductor is formed.Holes are positive charge carrier.
Ans 2: n-type semiconductor: When a pentavalent impurity such as phosphorus is added into the semiconductor,free electrons are generated and n type semiconductor is formed.Charge carriers is in n-type are free electrons.

Question # 2

Write the used of superconductors.

Ans 1: Superconductors can be used in :
1. Magnetic Resonance Imaging
2. Powerful but small electric motors
3. Fast computer chips
4. Magnetic Levitation Trains

Question # 3

Define crystal lattice.

Ans 1: The whole structure obtained by the repetition of unit cell is known as crystal lattice.

Question # 4

Define young modulus and shear modulus.

Ans 1: The ratio of tensile stress to tensile strain is called young modulus.
Ans 2: The ratio of shear stress to shear strain is called shear modulus.

Question # 5

What is meant by para and ferromagnetic substance?

Ans 1: The orbits and the spin axes of the electrons in an atom are so oriented that their field spot each other and the atom behaves like a tiny magnet.Substance with such atoms are called paramagnetic substance e.g iron.
There are some solid substance in which the atom cooperate with each other in such a way so as to exhibit a strong magnetic field there are called ferromagnetic substance.

Question # 6

Define volumetric strain.

Ans 1: When the applied stress change the volume,then the change in volume per unit volume is called volumetric strain.

Question # 7

Define insulators ,conductors and semiconductors.

Ans 1: Insulator: Those substance which have valence electrons tightly bound to their atoms are called insulators.
Conductors: Those substance which have plenty of free electrons for electrical conduction are called conductors,
Semiconductors:Those substance which have intermediate range of conductivities are called semiconductors e.g germanium and silicon.

Question # 8

Define retantivity.

Ans 1: When the current is reduced to zero,the material still remains strongly magnetized which is known as retantivity.

Question # 9

Describe energy band picture of insulators.

Ans 1: Insulators are those materials in which valence electron are bound to very tight to their atoms and are not free.In terms of energy bands,it means that an insulator has:
- An empty conduction band
- A full valence band
- A large energy gap

Question # 10

What is the difference between intrinsic and extrinsic semiconductors?

Ans 1: Intrinsic Semiconductor:A semiconductor in its extremely pure form is known as Intrinsicsemiconductors,Pure elements of silicon and germanium are Intrinsic semiconductors,These semiconductors elements have atoms with four valence electrons.
Ans 2: Extrinsic Semiconductor: The doped semiconductors material are called Extrinsic Semiconductor.The electrical behaviour of semiconductors is substantially changed introducing a small impurity into pure semiconductors,and this process is called doping.

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Online Short Questions Preparations

Online Short Questions For Chapter 6 "ICS Part 2 Physics Chapter 17 Short Questions Preparation "

Physics - ICS Part 2 Physics Chapter 17 Short Questions Preparation

Distinguished between p-type semiconductor and n-type semiconductor.

Write the used of superconductors.

Define crystal lattice.

Define young modulus and shear modulus.

What is meant by para and ferromagnetic substance?

Define volumetric strain.

Define insulators ,conductors and semiconductors.

Define retantivity.

Describe energy band picture of insulators.

What is the difference between intrinsic and extrinsic semiconductors?

Prepare Complete Set Wise Questions For Chapter 6 "ICS Part 2 Physics Chapter 17 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 1

Distinguished between p-type semiconductor and n-type semiconductor.

Write the used of superconductors.

Define crystal lattice.

Define young modulus and shear modulus.

What is meant by para and ferromagnetic substance?

Define volumetric strain.

Define insulators ,conductors and semiconductors.

Define retantivity.

Describe energy band picture of insulators.

What is the difference between intrinsic and extrinsic semiconductors?

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 2

What is critical temperature in super conductivity?

Distinguished between p-type semiconductor and n-type semiconductor.

Define elastic limit and Yield point.

Define coercivity of a material.

What are paramagnetic Substance?Give an example

Define superconductors.

Differentiate between amorphous and polymeric solid.

What are glassy solids?Do they possessed property of flow?

What is meant by strain energy?How can it be determined from the force extension of graph?

Define Fracture stress.

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 3

Describe the difference between proportional limit and elastic limit.

Define stress and strain,What are their units.

What is meant by strain energy?

What is critical temperature in super conductivity?

Define cell unit.

Define Saturation and Remanence of Hysteresis Loop.

Describe the energy band picture of semiconductors.

Distinguished between elasticity and plasticity.

Define stress and write its formula.

How the conductivity of semiconductor can be raised?

ICS Part 2 Physics Chapter 17 Short Questions Preparation - Set 4

What is meant by para and ferromagnetic substance?

Describe the difference between proportional limit and elastic limit.

Describe the energy band picture of semiconductors.

Define elastic limit and Yield point.

Differentiate between tensile stress and shear modes of stress and strain.

Write the used of superconductors.

How n type semiconductors are formed?

What is meant by hysteresis loss?

Define insulators ,conductors and semiconductors.

Distinguished between a valence and a conduction band.

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