ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

What do you understand by "background radiation "?State two source of this radiation?

Ans 1: When no radioactive source is placed near the radiation detector,it records radiation,These radiations are called background radiations..
Its source are
1. Cosmic rays
2. presence of radioactive substance Earth crust and atmosphere.

Question # 2

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 # 3

Define absorbed dose and Gray.

Ans 1: Absorbed dose:It is defined as the amount of energy absorbed from an ionizing radiation per unit mass of the absorbing body i.e.
Absorbed dose=energy/mass
Gray: it is defined as the amount of energy equal to one joule absorbed by a body of mass 1kg i.e
gray=1 joule/1 kg

Question # 4

What are thermal reactors?

Ans 1: The thermal reactors are called thermal reactors because the neutrons must be slowed down to thermal energies to produce further fission,They use natural uranium or slightly enriched uranium as fuel.

Question # 5

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

Ans 1: A particle with great power loses large amount of energy for small distances.That is,it produces more ionization but is less penetration.

Question # 6

Write names of hydrogen isotopes.

Ans 1: Three isotopes of hydrogen are:
1. Protium
2. Deuterium
3. Tritium

Question # 7

Write name of different quarks.

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

Question # 8

What are isotopes?What do you have in common?

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 # 9

Distinguished between nuclear fission and nuclear fusion.

Ans 1: Nuclear Fission: Such a reaction in which a heavy nuclei like that of uranium splits up into two of roughly equal size along with the emission of energy is called fission reaction.
Ans 2: Nuclear Fusion:A reaction in which two lights nuclei merge to form a heavy nucleus is called fusion reaction.It require very high temperature.

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

What do you understand by "background radiation "?State two source of this radiation?

Define background radiations.What are their sources?

Define absorbed dose and Gray.

What are thermal reactors?

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

Write names of hydrogen isotopes.

Write name of different quarks.

What are isotopes?What do you have in common?

Distinguished between nuclear fission and nuclear fusion.

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

What do you understand by "background radiation "?State two source of this radiation?

Define background radiations.What are their sources?

Define absorbed dose and Gray.

What are thermal reactors?

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

Write names of hydrogen isotopes.

Write name of different quarks.

What are isotopes?What do you have in common?

Distinguished between nuclear fission and nuclear fusion.

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?

What do you know about Radioactivity?

What do you mean by critical mass and critical volume?

Distinguished between nuclear fission and nuclear fusion.

Discuss the advantages of fission power from point of view of safety,pollution and resources.

Define decay constant.

Why moderators are used in the core of nuclear reactor?

What do you mean by quark?

Name the basic forces of nature.

Define nuclear fission.

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

Define fission and fusion reaction.

Define Half line and discuss its dependence.

Name the basic forces of nature.

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

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

What is half line?

What do you mean by critical mass and critical volume?

Discuss the advantages of fission power from point of view of safety,pollution and resources.

What is the function of control rods in nuclear reactor?

Which radiation does would deposit more energy to the body(a)10 m Gy to the hand (b)1m Gy dose to entire body.

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

What do you mean by critical mass and critical volume?

If nucleus has a life of one year,does this mean that it will be completely decayed after two years?

Define absorbed dose and Gray.

Wh Geiger counter is not suitable for fast counting?

State two characteristics of beta particle.

What are the relation between decay constantλand the half-line of a radioactive element?

Write name of different quarks.

Differentiate between Baryons and Mesons.

Differentiate between parent and daughter element.

Which radiation does would deposit more energy to the body(a)10 m Gy to the hand (b)1m Gy dose to entire body.

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

Define Hadrons and Leptons.

Distinguished between nuclear fission and nuclear fusion.

What is radioactivity decay?Give an example.

What is the function of control rods in nuclear reactor?

Differentiate between controlled and uncontrolled reaction.

What are thermal reactors?

Write names of hydrogen isotopes.

12th Class Physics
Short Questions Preparation