ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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 # 2

Write name of different quarks.

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

Question # 3

State two characteristics of beta particle.

Ans 1: They are negatively charged particle.
Their penetration power is high.

Question # 4

Why moderators are used in the core of nuclear reactor?

Ans 1: The moderator ae used in the core to slow the neutrons down so that they can be captured and keep the chain reaction going.

Question # 5

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 # 6

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 # 7

What do you know about Radioactivity?

Ans 1: The elements having charge number Z>82 are unstable and they emit invisible radiations which affect the photographic plate.Such element are called radioactive elements and this process is called radioactivity.

Question # 8

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.

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

Describe the principle of operation of solid state detector.

Ans 1: The principle of operation of solid state detector is based upon the production of electron-hole pair to cause a pulse of current.

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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 absorbed dose and Gray.

Write name of different quarks.

State two characteristics of beta particle.

Why moderators are used in the core of nuclear reactor?

What are isotopes?What do you have in common?

What is the function of control rods in nuclear reactor?

What do you know about Radioactivity?

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

Distinguished between nuclear fission and nuclear fusion.

Describe the principle of operation of solid state detector.

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 absorbed dose and Gray.

Write name of different quarks.

State two characteristics of beta particle.

Why moderators are used in the core of nuclear reactor?

What are isotopes?What do you have in common?

What is the function of control rods in nuclear reactor?

What do you know about Radioactivity?

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

Distinguished between nuclear fission and nuclear fusion.

Describe the principle of operation of solid state detector.

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

What do you know about Radioactivity?

How can radioactivity help in the treatment of cancer?

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 radioactivity decay?Give an example.

What do you mean by quark?

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

Define decay constant.

Describe the principle of operation of solid state detector?

Differentiate between Baryons and Mesons.

Why moderators are used in the core of nuclear reactor?

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

Write name of different quarks.

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

Define background radiations.What are their sources?

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

Distinguished between nuclear fission and nuclear fusion.

Differentiate between controlled and uncontrolled reaction.

What do you know about Radioactivity?

Protons and neutron are formed by what types of quarks?

Define nuclear fission.

Define decay constant.

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

Write names of hydrogen isotopes.

Differentiate between parent and daughter element.

Name the basic forces of nature.

Write name of different quarks.

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

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

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

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

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

Why moderators are used in the core of nuclear reactor?

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

Describe the principle of operation of solid state detector?

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

What are thermal reactors?

What is self-quenching in Geiger Muller Counter?

Define decay constant.

Define fission and fusion reaction.

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

12th Class Physics
Short Questions Preparation