FEBRUARY 2017 Sub. Code: 1907
B.Sc. RADIOTHERAPY TECHNOLOGY
FIRST YEAR
PAPER II BASIC PHYSICS, RADIATION PHYSICS AND BASIC OF
CLINICAL RADIOGRAPHY/IMAGING
Q.P. Code: 801907
Time: Three Hours Maximum: 100 Marks
Answer all questions
I. Elaborate on: x 10 30)
1. Discuss Photo-electric absorption, Compton scattering and pair production
process.
2. Write an essay on film processing methods. Add a note on the effects of
temperature in film processing.
3. Explain computed tomography with suitable diagram.
II. Write notes on: x 5 40)
1. Write notes on Periodic table.
2. Explain ohms law, coulomb's law and joule's law.
3. Explain in details about Contrast, Film speed and Latitude.
4. Step up and step down transformer.
5. Types of radioactive decay with examples.
6. Photoelectric effect and Compton effect.
7. Factors affecting the fluoroscopic image.
8. Basic Principles of MRI and imaging methods.
III. Short answers on: (10 x 3 30)
1. SI unit of Temperature.
2. Define Isotope and Isobar.
3. Heel effect.
4. Linear attenuation coefficient.
5. Fog and noise.
6. Difference between CT and MRI.
7. Fluoroscopy.
8. Characteristic X-ray.
9. Half value layer.
10. Optical density.