ICS Part 2 Physics Chapter 21 Short Questions Preparation


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Physics - ICS Part 2 Physics Chapter 21 Short Questions Preparation

Question # 1

What is self-quenching in Geiger Muller Counter?

  • Ans 1: A small amount of gas is added into the GM counter is called self quenching or internal quenching,In GM counter the phenomena of quenching is to save the counter from spurious or false counts.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 1

Question # 1

What is self-quenching in Geiger Muller Counter?

  • Ans 1: A small amount of gas is added into the GM counter is called self quenching or internal quenching,In GM counter the phenomena of quenching is to save the counter from spurious or false counts.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

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 - Set 3

Question # 1

What is meant by dose of radiation?What is its SI units?

  • Ans 1: Radiation dose is a measure of the amount of exposure to radiation.There are three kinds of dose:
    1. Absorbed dose: it is the amount of energy deposited by radiation in a mass.
    D=E/m its SI unit is Gy.
    2.Equivalent dose: It is calculated for individual organ
    De=D*RBE
    3.Effective dose: It is calculated for the whole body,It is also measured ni Sv.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 4

Question # 1

Differentiate between parent and daughter element.

  • Ans 1: The change of an element into a new element due to emission of radiation is called radioactive decay.The original atom is called parent element and the element formed due to this decay is called daughter element.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

Question # 1

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.
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ICS Part 2 Physics Chapter 21 Short Questions Preparation