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

Name the basic forces of nature.

  • Ans 1: The basic forces of nature are
    1. Gravitational force
    2. Electromagnetic force
    3. Weak nuclear force
    4. Strong nuclear force
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Prepare Complete Set Wise Questions For Chapter 10 "ICS Part 2 Physics Chapter 21 Short Questions Preparation "

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

Question # 1

Name the basic forces of nature.

  • Ans 1: The basic forces of nature are
    1. Gravitational force
    2. Electromagnetic force
    3. Weak nuclear force
    4. Strong nuclear force
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 2

Question # 1

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

  • Ans 1: Half-line:T1/2is the period in which half of the atom of a radioactive element decay.
    It is related with a decay constant by formula.
    T1/2= 0.693/Λ
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 3

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 - Set 4

Question # 1

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

  • Ans 1: The relation between decay constantλand the half line (T1/2) isλT1/2=0.693
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ICS Part 2 Physics Chapter 21 Short Questions Preparation - Set 5

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

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