ICS Part 2 Physics Chapter 17 Short Questions Preparation

Question # 1

How the conductivity of semiconductor can be raised?

Ans 1: The conductivity of a semiconductor can be raised by the process of doping in which small number of impurity atoms are added to pure semiconductors.

Question # 2

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.

Question # 3

Define Saturation and Remanence of Hysteresis Loop.

Ans 1: Saturation: The material is said is reduced to magnetically saturated when magnetic flux density reaches a maximum value.
Remanence: When the current is reduced to zero,the material still remains strongly magnetize.It is due to the tendency of domains to stay partly in line,once they have been aligned,It is called remanence or relativity.

Question # 4

What is meant by hysteresis loss?

Ans 1: The area of the loop is the measure of the energy needed to magnetize and demagnetize the specimen during each cycle of the magnetizing current.This is energy required to do work against internal friction of the domains,this work is dissipated as heat.It is called hysteresis loss.

Question # 5

Distinguished between a valence and a conduction band.

Ans 1: Valence bond: The energy band occupied by valence electrons is called the valence band.
Ans 2: Conduction band:The energy band are occupied by free electrons is called the conduction band.

Question # 6

What is meant by Ferromagnetic substance?

Ans 1: In ferromagnetic substance the atoms cooperate with each other in such a away so as to exhibit a strong magnetic field.In ferromagnetic substance there exists a small region called domain.

Question # 7

Define polymeric solid with example.

Ans 1: Polymers are solid materials with a structure that is intermediate between order and disorder,They can be classified as partially or poorly crystalline solids.For example plastic,rubber.

Question # 8

How n type semiconductors are formed?

Ans 1: When a silicon crystal is doped with a pentavalent element,e.g arsenic,antimony or phosphorus etc.four valence electrons of the impurity atom form covalent bond with the four neighbouring Si atoms,while the fifth valence electrons provide a free electron in the crystal.Such a doped semiconductor is called n type semiconductor.

Question # 9

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

Ans 1: Tensile Stress: A stress that cause the change in length of an object is called tensile stress.
Shear stress: A stress that cause the change in shape of an object is called shear stress.
Tensile stain:If the strain is due to tensile stress it is called tensile strain.A strain produced in the object when it is subjected to shear stress is called shear strain.

Question # 10

Distinguished between elasticity and plasticity.

Ans 1: Elasticity: In deformed crystalline solid,the atoms return to their equilibrium position after the removal of external force.This ability of the body to return to its original shape is called elasticity.
Ans 2: Plasticity:If the stress is increased beyond elastic limit,the specimen becomes permanently deformed.This is called plasticity.

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ICS Part 2 Physics Chapter 17 Short Questions Preparation

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

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

How the conductivity of semiconductor can be raised?

What is the difference between intrinsic and extrinsic semiconductors?

Define Saturation and Remanence of Hysteresis Loop.

What is meant by hysteresis loss?

Distinguished between a valence and a conduction band.

What is meant by Ferromagnetic substance?

Define polymeric solid with example.

How n type semiconductors are formed?

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

Distinguished between elasticity and plasticity.

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

How the conductivity of semiconductor can be raised?

What is the difference between intrinsic and extrinsic semiconductors?

Define Saturation and Remanence of Hysteresis Loop.

What is meant by hysteresis loss?

Distinguished between a valence and a conduction band.

What is meant by Ferromagnetic substance?

Define polymeric solid with example.

How n type semiconductors are formed?

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

Distinguished between elasticity and plasticity.

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

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

What are paramagnetic Substance?Give an example

Distinguished between elasticity and plasticity.

Define Fracture stress.

Define insulators ,conductors and semiconductors.

Define module of elasticity.

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

Describe the energy band picture of semiconductors.

Define yield point and ultimate tensile stress.

Differentiate between ductile and brittle substance,Give their examples.

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

Describe energy band picture of insulators.

How the conductivity of semiconductor can be raised?

Define module of elasticity.

What does are of hysteresis loop tell?

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

Define yield point and ultimate tensile stress.

Define Saturation and Remanence of Hysteresis Loop.

Explain what is curie temperature?

Define insulators ,conductors and semiconductors.

Define polymerization,write two examples of polymeric solid

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

Define insulators ,conductors and semiconductors.

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

What is meant by Ferromagnetic substance?

Compare the electrical behavior of conductor and semiconductor in terms of energy band theory.

Differentiate between ductile and brittle substance,Give their examples.

Define superconductors.

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

Define crystalline and amorphous.

Describe the energy band picture of semiconductors.

What are paramagnetic Substance?Give an example

ICS Part 2 Physics Chapter 17 Short Questions Preparation

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