Radiation Physics M.Sc Non Medical Question Bank : web.tnmgrmu.ac.in

Name of the University : The Tamilnadu Dr. M.G.R. Medical University
Degree : M.Sc Non-Medical Degree Examination
Subject Code/Name : 4011/Radiation Physics
Year : I
Paper : I
Document Type : Question Bank
Website : web.tnmgrmu.ac.in

Download Model/Sample Question Paper :
2011-2014 : https://www.pdfquestion.in/uploads/web.tnmgrmu.ac.in/4006-284011KY.pdf

May 2011 :
[KY 011]
Sub. Code: 4011
M.Sc (MEDICAL PHYSICS) DEGREE EXAMINATION
(Revised Regulations for Candidates admitted from 2010-2011)
Paper I – RADIATION PHYSICS
Q.P. Code : 284011
Time : Three hours
Maximum :100marks
Answer All questions. :
I. Elaborate on : (2 x 20 = 40)
1. Natural and artificial radioactivity
2. Interaction of ionizing radiation with matter.
II. Write notes on : (10 x 6 = 60)
1. Binding energy
2. Autotransformers
3. Half-value layer
4. Ohm’s law
5. Relative biological effectiveness (RBE)
6. Electron volt
7. Cerenkov radiation
8. Bragg curve
9. Electronic equilibrium
10. Atomic nucleus

Sub.code:4011
I. Elaborate on:
1. Describe in detail about interaction of ionizing radiation with matter and importance of these interaction.
2. Discuss the various methods of radioactive decay.
II. Write Notes on:
1. Properties of alpha, beta and gamma radiation.
2. Ionization and excitation.
3. Bohr’s atomic model.
4. Energy transfer and energy co-efficient.
5. Isotopes, Isobars, Isotones and Isomers.
6. Bremmstrahlung and characteristics radiation.
7. Bragg curve.
8. Cerenkov radiation.
9. Radiation quality factor and Tissue weighting factor.
10. Mass defect and Binding energy.

May 2012 :
Answer ALL questions in the same order. :
I. Elaborate on :
1. Derive the Bethe-Bloch formulae for mass collision stopping power for charged particles.
2. (a) Describe the following nuclear transformations with suitable example.
(i) alpha decay (ii) beta-minus decay (iii) beta-plus emission
(b) Discuss briefly the neutron induced nuclear reactions.
II. Write notes on :
1. (a) Define Ohm’s law and Coulomb’s law of electric force.
(b) Discuss about the force on a current carrying conductor.
2. What are electromagnetic radiation? Using inverse square law, calculate4 the exposure rate at 3 m distance from the source when the same is 100 mR/hr at 1m distance.
3. What is radioactive equilibrium? Derive the condition for transient and secular equilibrium.
4. Define the following (i) Energy Fluence (ii) Intensity (iii) LET (iv) sievert (v) Exposure (vi) Electronic Attenuation Coefficient.
5. Explain the salient features of Rutherford’s atomic model.
6. Explain Compton scattering and its relevance to clinical applications.
7. Describe briefly about Cerenkov radiation.
8. Distinguish between Bremsstrahlung and Characteristic radiation.
9. (a) Derive the relationship between roentgen and rad.
(b) Give the comparison between KERMA and Absorbed dose.
10. Draw the depth dose curve and explain the spread of Bragg peak in clinical use.

APRIL 2013 :
I. Elaborate on: (2×20=40)
1. The structure of atom, explain the atom models and electronic configuration. Explain atomic mass number and mass units.
2. Passage of Heavy charged particles thro matter. Explain the methods of energy loss and write a note on Bragg curve.
II. Write notes on: (10X6=60)
1. Work, force and energy.
2. Mass defect and atomic binding energy.
3. Mutual and self-induction.
4. Properties of alpha, beta and gamma radiation.
5. Photo-electric effect.
6. Transformers and Autotransformers.
7. Write on the methods of production of Radioisotopes.
8. Write a short note on Mass, electronic and atomic attenuation coefficients.
9. Pair production.
10. Neutron induces nuclear reaction.