ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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

Ans 1: Solid state detector can count very fast than gas filled detector.
Solid state detector is much smaller in size.
It operates at low voltage.

Question # 2

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

Ans 1: Since
absorbed dose=D=energy/mass
energy=D * Mass
since the mass of whole body is much greater than mass of the hand,therefore 1 Gy dose given to the entire body deposit more energy.

Question # 3

What is the function of control rods in nuclear reactor?

Ans 1: Controls rods made of Cadmium or Boron are used for the control of number of neutrons,so that of all the neutrons produced in fission ,only one neutrons produces further fission reaction.
In case of emergency or for repair purpose control rods are used to stop the chain reaction and shut down the reactor.

Question # 4

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

Ans 1: As alpha and beta are electrically charged particle,so they can cause ionization without hitting an atom either by,repellings the electron of target particle.

Question # 5

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 # 6

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 # 7

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 # 8

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 # 9

Protons and neutron are formed by what types of quarks?

Ans 1: Protons is formed by two up and one down quarks.Neutron is formed by two down and one up quarks.

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

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

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

What is the function of control rods in nuclear reactor?

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

Distinguished between nuclear fission and nuclear fusion.

What are isotopes?What do you have in common?

Define background radiations.What are their sources?

What are thermal reactors?

Protons and neutron are formed by what types of quarks?

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

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

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

What is the function of control rods in nuclear reactor?

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

Distinguished between nuclear fission and nuclear fusion.

What are isotopes?What do you have in common?

Define background radiations.What are their sources?

What are thermal reactors?

Protons and neutron are formed by what types of quarks?

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 is self-quenching in Geiger Muller Counter?

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

What do you mean by critical mass and critical volume?

What are thermal reactors?

What are isotopes?What do you have in common?

Write name of different quarks.

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

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

What is half line?

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

State two characteristics of beta particle.

What are thermal reactors?

What do you mean by critical mass and critical volume?

Define fission and fusion reaction.

How energy released when 1 amu converted into energy?

Differentiate between controlled and uncontrolled reaction.

Briefly describe the term radiography.

Define mass defect and binding energy.

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

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

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

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

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

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

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

What are thermal reactors?

Write name of different quarks.

Define background radiations.What are their sources?

What do you know about Radioactivity?

Name the basic forces of nature.

What do you mean by quark?

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

What do you know about Radioactivity?

Define decay constant.

Briefly describe the term radiography.

Protons and neutron are formed by what types of quarks?

What is the function of control rods in nuclear reactor?

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

Define half-line of radioactive element.How is it related with decay constant?

12th Class Physics
Short Questions Preparation