ICS Part 2 Physics Chapter 21 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

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

Question # 1

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

Question # 1

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

Question # 1

Define Half line and discuss its dependence.

  • Ans 1: The half line T1/2of a radioactive elements is that period in which half of the atom decay.
    Dependence: The number of decaying atoms is proportional to the number of atoms present in the beginning of the period and is proportional to time interval.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

What is radioactivity decay?Give an example.

  • Ans 1: The emission of radiations from elements having charge number Z greater than 82 is called radioactivity or radioactive decay.
    The emission of an a-particle from radium-226 ,result in the formation of radon gas.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

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.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation

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