ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

Define background radiations.What are their sources?

Ans 1: When no radioactive source is placed near the radiations detector,it records radiations,These radiations are called background radiations.
Its source are
1. The cosmic rays which come to us from outer space.
2. Radioactive substance present is the Earth's crest.
3. Radioactive potassium and carbon in the body.

Question # 2

Define decay constant.

Ans 1: Decay constant of any element is to the fraction of the decaying atoms per unit time.

Question # 3

What do you mean by critical mass and critical volume?

Ans 1: The mass of uranium in which one neutron out of all neutron out of all neutron produced in one fission reaction produces further fission reaction is called critical mass.

Question # 4

What factor make a Fusion reaction difficult to achieve?

Ans 1: A fusion reaction requires large energy and temperature ,up to million degrees centigrades,So a fusion reaction is difficult to achieve.

Question # 5

Write name of different quarks.

Ans 1: The name of different quarks are as follows
Up,Down-Strange ,Charm,Top,Bottom

Question # 6

Describe a brief account of interaction of various types of radiations with matter.

Ans 1:
1. An a particle has well defined range in a medium ,before coming to rest which is called range if a-particle.
2. It lose its energy due to excitation and ionization of atoms and molecules in matter.
Ans 2: b-particle:
1. The ionizing ability of b particles is about 100 times less than that of a alpha particle.
2. The range of b particle is 100 times more than that of a- particle.

Question # 7

What do you mean by quark?

Ans 1: Quark is the basic building block of mesons and baryons.In actual it is the basic building block matter,It is proposed by Murray Gell-Mann and G.Zweig .It is of six types: up,down,strange,charm,bottom and top.

Question # 8

What is radioactive tracer?Give its one application each in industry and medicine.

Ans 1: Radioactive tracer is a radioactive isotope which acts as an indicator or tracer that makes it possible to follow the course of a chemical or biological process.They are used in
1. Medicine to detect malignant tumors
2. Agriculture to study the uptake of a fertilizer by a plant.

Question # 9

What are isotopes?What do they have common and what are their difference.

Ans 1: Isotopes are such nuclei of an element that have the same charge number Z but have different mass number A.It means,in the nucleus the number of protons is the same but the number of neutrons is different.

Question # 10

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Ans 1: Advantage and disadvantage of nuclear power are given below compared to the use of fossil generated power.
Advantage:
1. Much more energy is produced.
2. Produces no environmental pollution.
3. Electricity produced in this way is far cheaper than fossil fuel generated power.
Disadvantage :
1. Uranium mining is more dangerous than coal mining.
2. Nuclear waster is very injurous and harmful to living things.
3. Nuclear waste can not be transported through area of population whereas fossil fuel can be.

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ICS Part 2 Physics Chapter 21 Short Questions Preparation

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

Online Short Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

Define background radiations.What are their sources?

Define decay constant.

What do you mean by critical mass and critical volume?

What factor make a Fusion reaction difficult to achieve?

Write name of different quarks.

Describe a brief account of interaction of various types of radiations with matter.

What do you mean by quark?

What is radioactive tracer?Give its one application each in industry and medicine.

What are isotopes?What do they have common and what are their difference.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

Prepare Complete Set Wise Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Define background radiations.What are their sources?

Define decay constant.

What do you mean by critical mass and critical volume?

What factor make a Fusion reaction difficult to achieve?

Write name of different quarks.

Describe a brief account of interaction of various types of radiations with matter.

What do you mean by quark?

What is radioactive tracer?Give its one application each in industry and medicine.

What are isotopes?What do they have common and what are their difference.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

How can radioactivity help in the treatment of cancer?

A particle which produce more ionization ,is less penetrating.Why?

What is the function of control rods in nuclear reactor?

Describe a brief account of interaction of various types of radiations with matter.

State two characteristics of beta particle.

Differentiate between Baryons and Mesons.

Briefly give the use of (a)Wilson cloud chamber (b)G.M counter.

Define Hadrons and Leptons.

Discuss the advantage and disadvantage of nuclear power compare to the use of fossil fuel generated power.

How energy released when 1 amu converted into energy?

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

Differentiate between controlled and uncontrolled reaction.

What factor make a Fusion reaction difficult to achieve?

What is radioactivity decay?Give an example.

What are isotopes?What do they have common and what are their difference.

A particle which produce more ionization ,is less penetrating.Why?

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

What are thermal reactors?

What is radioactive tracer?Give its one application each in industry and medicine.

How alpha and beta may ionize an atom without directly hitting the electrons?

What is the function of control rods in nuclear reactor?

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

What is radioactive tracer?Give its one application each in industry and medicine.

Define background radiations.What are their sources?

What are thermal reactors?

What do you know about Radioactivity?

Briefly describe the term radiography.

Why are heavy nuclei unstable?

Describe a brief account of interaction of various types of radiations with matter.

Define Half line and discuss its dependence.

Why moderators are used in the core of nuclear reactor?

Write name of different quarks.

ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Describe the principle of operation of solid state detector.

Define fission and fusion reaction.

If you swallowed a alpha source and beta source ,which would be more dangerous to you ?Explain

Write down two advantages of solid state detector over geiger muller counter.

Name the basic forces of nature.

What is self-quenching in Geiger Muller Counter?

State two characteristics of beta particle.

12th Class Physics
Short Questions Preparation